title
React JS Full Course for Beginners | Complete All-in-One Tutorial | 9 Hours

description
Web Dev Roadmap for Beginners (Free!): https://bit.ly/DaveGrayWebDevRoadmap This React JS Full Course for Beginners is an all-in-one beginner tutorial and complete course full of nearly 9 hours of React JS code and instruction to level up your programming skills. This course teaches modern React with functional components and hooks. Think of this React full course tutorial as a React JS video textbook with 23 clearly defined chapters. ⭐ Become a full-stack web dev with Zero To Mastery Courses: - Advanced React: https://bit.ly/AdvReactDev - Jr to Senior Web Dev Roadmap: https://bit.ly/WebDevRoadmap-JrtoSr - Master FAANG Coding Interviews: https://bit.ly/FAANGInterview 🚩 Subscribe ➜ https://bit.ly/3nGHmNn 🚀 Please note: If you are just starting out with Javascript, I recommend completing my 8 hour Javascript full course for beginners tutorial before you try to learn React: https://youtu.be/EfAl9bwzVZk ❗ During the tutorial I mention several resources to be provided "in the description below" including links to source code for the various chapters. I have put all of these resource links in one GitHub repository. 🔗 All Resources & Source Code: https://github.com/gitdagray/react_resources 📬 Course Updates ➜ https://courses.davegray.codes/ React Full Course for Beginners: (0:00:00) Intro (0:00:48) Chapter 1: Start Here (0:13:56) Chapter 2: App & JSX (0:25:28) Chapter 3: Functional Components (0:36:01) Chapter 4: Applying CSS Styles (0:43:11) Chapter 5: Click Events (0:51:55) Chapter 6: useState Hook (1:03:23) Chapter 7: Lists & Keys (1:35:50) Chapter 8: Props & Prop Drilling (2:01:19) Chapter 9: Controlled Component Inputs (2:38:25) Chapter 10: Project Challenge (3:03:44) Chapter 11: useEffect Hook (3:15:08) Chapter 12: JSON Server (3:21:23) Chapter 13: Fetch API Data (3:44:37) Chapter 14: CRUD Operations (4:04:33) Chapter 15: Fetch Data Challenge (4:43:10) Chapter 16: React Router (5:02:58) Chapter 17: Router Hooks & Links (5:51:28) Chapter 18: Flexbox Components (6:02:34) Chapter 19: Axios API Requests (6:40:47) Chapter 20: Custom Hooks (7:17:04) Chapter 21: Context API & useContext Hook (7:56:10) Chapter 22: Easy Peasy Redux (8:33:39) Chapter 23: Build & Deploy Your React Apps ➡️UPDATE: Chapter 16 & 17 Part 2: Refactor to React Router v6: https://youtu.be/XBRLVRjZ3CQ 👀 Visual Studio Code: https://code.visualstudio.com/ ✅ Follow Me: Twitter: https://twitter.com/yesdavidgray LinkedIn: https://www.linkedin.com/in/davidagray/ Blog: https://yesdavidgray.com Reddit: https://www.reddit.com/user/DaveOnEleven ☕ Buy Me A Coffee: https://www.buymeacoffee.com/davegray Was this React JS full course with 9 hours of instruction helpful? If so, please share. Let me know your thoughts in the comments. #react #full #course

detail
{'title': 'React JS Full Course for Beginners | Complete All-in-One Tutorial | 9 Hours', 'heatmap': [{'end': 1906.003, 'start': 1585.006, 'weight': 1}, {'end': 3497.409, 'start': 3170.381, 'weight': 0.725}, {'end': 12066.766, 'start': 11743.026, 'weight': 0.716}, {'end': 26672.032, 'start': 26346.877, 'weight': 0.81}], 'summary': "This 9-hour react js course for beginners covers 23 tutorials, emphasizing react's importance with over 208 jobs in kansas city, including 92 offering $130,000 plus. it includes setting up a project in visual studio code, jsx rendering, functional components, state management, form creation, useeffect, json server usage, crud operations, react router, custom hooks, axios integration, refactoring with context api, and deployment to netlify and github pages.", 'chapters': [{'end': 638.509, 'segs': [{'end': 25.886, 'src': 'embed', 'start': 0.179, 'weight': 2, 'content': [{'end': 9.074, 'text': 'Hello Hello and welcome to nine hours of React tutorials for beginners.', 'start': 0.179, 'duration': 8.895}, {'end': 15.779, 'text': 'This video is made up of 23 tutorials for learning React that build upon each other much like the chapters of a book.', 'start': 9.534, 'duration': 6.245}, {'end': 19.061, 'text': 'You will build projects and learn the fundamentals of React.', 'start': 16.259, 'duration': 2.802}, {'end': 25.886, 'text': 'Before beginning, I recommend that you already know the basics of HTML, CSS, and most importantly, JavaScript.', 'start': 19.582, 'duration': 6.304}], 'summary': '23 tutorials for learning react, 9 hours long, building projects and covering fundamentals.', 'duration': 25.707, 'max_score': 0.179, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go179.jpg'}, {'end': 114.59, 'src': 'embed', 'start': 89.434, 'weight': 0, 'content': [{'end': 95.963, 'text': "There's documentation here for React, just like we would find on MDN for vanilla JavaScript.", 'start': 89.434, 'duration': 6.529}, {'end': 98.964, 'text': 'Now, I mentioned a profitable decision.', 'start': 96.623, 'duration': 2.341}, {'end': 109.688, 'text': "If we look at the jobs listed for React in the Kansas City area, which is the area that I live in, as of today, there's 208 plus React jobs listed.", 'start': 99.264, 'duration': 10.424}, {'end': 114.59, 'text': 'Now, there may be a few that slipped in there that just have the word React in the listing.', 'start': 109.728, 'duration': 4.862}], 'summary': 'Over 208 react jobs in kansas city area, resembling mdn for vanilla javascript', 'duration': 25.156, 'max_score': 89.434, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go89434.jpg'}, {'end': 164.569, 'src': 'embed', 'start': 139.401, 'weight': 1, 'content': [{'end': 144.287, 'text': "And if you go to nodejs.org, it will identify what platform you're on.", 'start': 139.401, 'duration': 4.886}, {'end': 146.55, 'text': "I'm on Windows, and it knows that already.", 'start': 144.507, 'duration': 2.043}, {'end': 149.233, 'text': 'And then it will offer the appropriate download.', 'start': 147.151, 'duration': 2.082}, {'end': 152.958, 'text': 'Likewise, you can install Node.js on Mac and Linux.', 'start': 149.614, 'duration': 3.344}, {'end': 158.645, 'text': 'After you do that, we will come back at the command line and I will show you how to check the version.', 'start': 153.558, 'duration': 5.087}, {'end': 164.569, 'text': 'But you may also want to go to store.chrome.web.', 'start': 159.385, 'duration': 5.184}], 'summary': 'Node.js can be installed on windows, mac, and linux. visit nodejs.org for platform-specific downloads and version checking.', 'duration': 25.168, 'max_score': 139.401, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go139401.jpg'}, {'end': 284.802, 'src': 'embed', 'start': 261.043, 'weight': 3, 'content': [{'end': 268.91, 'text': 'When Create React App completes, you should see a screen like this, at least if you have your terminal open in VS Code and set it to full screen,', 'start': 261.043, 'duration': 7.867}, {'end': 269.43, 'text': 'like I did.', 'start': 268.91, 'duration': 0.52}, {'end': 275.715, 'text': 'You can make it smaller or if it starts out small at the bottom, you can click this arrow and bring it back up.', 'start': 269.831, 'duration': 5.884}, {'end': 280.118, 'text': "And there I'm scrolling back to show what it shows in the terminal.", 'start': 276.335, 'duration': 3.783}, {'end': 284.802, 'text': 'But now it is complete and our full project is in VS Code.', 'start': 280.619, 'duration': 4.183}], 'summary': 'Upon completion of create react app, the full project is visible in vs code.', 'duration': 23.759, 'max_score': 261.043, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go261043.jpg'}], 'start': 0.179, 'title': 'React tutorials and project setup', 'summary': "Introduces 23 tutorials for learning react, highlighting its importance and popularity, with over 208 jobs listed in kansas city, including 92 offering $130,000 plus. it also discusses setting up a react project in visual studio code, including installing node.js, creating a project, and navigating the project's structure.", 'chapters': [{'end': 138.961, 'start': 0.179, 'title': 'React tutorials for beginners', 'summary': 'Introduces 23 tutorials for learning react, highlighting its importance as a javascript library for building user interfaces, its popularity, and the high demand for react developers, with over 208 jobs listed in the kansas city area, including 92 offering $130,000 plus.', 'duration': 138.782, 'highlights': ['The chapter introduces 23 tutorials for learning React, emphasizing its importance as a JavaScript library for building user interfaces, its popularity, and the high demand for React developers, with over 208 jobs listed in the Kansas City area, including 92 offering $130,000 plus.', 'The tutorials build upon each other in a chapter-like progression, and the creator recommends having a good understanding of HTML, CSS, and JavaScript before starting the tutorials.', 'The React library is maintained by Facebook and a community of developers and companies, and it was initially released in May of 2013.', 'The chapter emphasizes the profitability of learning React, citing 208 plus React jobs listed in the Kansas City area and 92 or more offering $130,000 plus for the position.']}, {'end': 638.509, 'start': 139.401, 'title': 'Setting up a react project in visual studio code', 'summary': "Discusses setting up a react project in visual studio code, including installing node.js, creating a react project, using visual studio code, and navigating the project's structure.", 'duration': 499.108, 'highlights': ['Installing Node.js on different platforms Node.js can be installed on different platforms such as Windows, Mac, and Linux, with platform-specific downloads available on nodejs.org.', "Creating a React project in Visual Studio Code The process of creating a React project in Visual Studio Code involves using the command 'npx create-react-app' followed by the project name, with the completion of the process taking a few minutes.", 'Using Visual Studio Code for React projects Visual Studio Code is recommended for React projects, with the ability to open a terminal window, navigate project folders, and utilize useful extensions for React development.']}], 'duration': 638.33, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go179.jpg', 'highlights': ['The chapter introduces 23 tutorials for learning React, emphasizing its importance as a JavaScript library for building user interfaces, its popularity, and the high demand for React developers, with over 208 jobs listed in the Kansas City area, including 92 offering $130,000 plus.', 'Installing Node.js on different platforms Node.js can be installed on different platforms such as Windows, Mac, and Linux, with platform-specific downloads available on nodejs.org.', 'The tutorials build upon each other in a chapter-like progression, and the creator recommends having a good understanding of HTML, CSS, and JavaScript before starting the tutorials.', "Creating a React project in Visual Studio Code The process of creating a React project in Visual Studio Code involves using the command 'npx create-react-app' followed by the project name, with the completion of the process taking a few minutes."]}, {'end': 1518.802, 'segs': [{'end': 752.707, 'src': 'embed', 'start': 725.201, 'weight': 3, 'content': [{'end': 731.684, 'text': 'You can go to the Terminal menu and choose New Terminal, or you can do what I do and press Control and the Tilde.', 'start': 725.201, 'duration': 6.483}, {'end': 735.546, 'text': "At least I'm on Windows, and that opens up a terminal window as well.", 'start': 731.804, 'duration': 3.742}, {'end': 743.579, 'text': "From here I'm going to type npm start and this will launch a local development browser,", 'start': 736.146, 'duration': 7.433}, {'end': 750.545, 'text': "should be at local host port 3000 and we'll be able to view the initial project setup.", 'start': 743.579, 'duration': 6.966}, {'end': 752.707, 'text': 'and here we have the intro project.', 'start': 750.545, 'duration': 2.162}], 'summary': 'To open a terminal, use terminal menu or press control+tilde. typing npm start launches a local development browser at localhost:3000, showcasing the initial project setup.', 'duration': 27.506, 'max_score': 725.201, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go725201.jpg'}, {'end': 884.298, 'src': 'embed', 'start': 837.987, 'weight': 0, 'content': [{'end': 845.533, 'text': "In this tutorial, we're exploring the app component, which is the default component created by a new React project.", 'start': 837.987, 'duration': 7.546}, {'end': 851.917, 'text': "And then we're also going to explore JSX, what it is, and what you can do within it.", 'start': 846.013, 'duration': 5.904}, {'end': 857.942, 'text': "Let's start by looking at the index.js file that's created when we use Create React App.", 'start': 852.538, 'duration': 5.404}, {'end': 860.604, 'text': 'And we import our app.', 'start': 858.182, 'duration': 2.422}, {'end': 865.366, 'text': 'from the app file because each component gets its own file.', 'start': 861.764, 'duration': 3.602}, {'end': 876.293, 'text': "And here you can see that the app component is injected into the DOM and it's being injected into the element that has the ID of root.", 'start': 866.047, 'duration': 10.246}, {'end': 879.175, 'text': 'And that is the default when you create a React project.', 'start': 876.373, 'duration': 2.802}, {'end': 884.298, 'text': "So let's look at this app component and we'll look at app.js.", 'start': 879.675, 'duration': 4.623}], 'summary': 'Tutorial on exploring the default app component and jsx in react project', 'duration': 46.311, 'max_score': 837.987, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go837987.jpg'}, {'end': 1033.156, 'src': 'embed', 'start': 1002.676, 'weight': 2, 'content': [{'end': 1008.94, 'text': 'But inside any function component we create, we can add more JavaScript.', 'start': 1002.676, 'duration': 6.264}, {'end': 1011.962, 'text': 'So I could define a variable up here called name.', 'start': 1009.1, 'duration': 2.862}, {'end': 1015.304, 'text': "and I can put my name in it, and that's fine.", 'start': 1012.782, 'duration': 2.522}, {'end': 1019.547, 'text': 'And we can refer to this variable later inside the JSX.', 'start': 1015.444, 'duration': 4.103}, {'end': 1025.251, 'text': 'The JSX is JavaScript, and it stands for JavaScript in XML.', 'start': 1020.207, 'duration': 5.044}, {'end': 1030.275, 'text': "It resembles HTML very much, but it's not quite the same.", 'start': 1025.59, 'duration': 4.685}, {'end': 1032.396, 'text': 'You can see we can write HTML.', 'start': 1030.675, 'duration': 1.721}, {'end': 1033.156, 'text': "Here's a div.", 'start': 1032.476, 'duration': 0.68}], 'summary': 'Function components allow adding javascript variables, jsx resembles html but is not the same.', 'duration': 30.48, 'max_score': 1002.676, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go1002676.jpg'}, {'end': 1129.987, 'src': 'embed', 'start': 1103.557, 'weight': 5, 'content': [{'end': 1109.981, 'text': 'And also, it is important to know that JSX renders data as text when it displays it.', 'start': 1103.557, 'duration': 6.424}, {'end': 1117.874, 'text': 'So if we provide a text string, or an integer, for example, either type of data, it would be rendered as text.', 'start': 1110.502, 'duration': 7.372}, {'end': 1119.617, 'text': "So let's look at an example of that.", 'start': 1117.894, 'duration': 1.723}, {'end': 1121.14, 'text': 'Here we have our header.', 'start': 1120.098, 'duration': 1.042}, {'end': 1123.224, 'text': 'Let me put a paragraph below the header.', 'start': 1121.26, 'duration': 1.964}, {'end': 1129.987, 'text': 'And inside the paragraph, we could just put a word like we would see in HTML.', 'start': 1124.443, 'duration': 5.544}], 'summary': 'Jsx renders data as text, even integers, and strings, as seen in html.', 'duration': 26.43, 'max_score': 1103.557, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go1103557.jpg'}, {'end': 1260.977, 'src': 'embed', 'start': 1229.755, 'weight': 6, 'content': [{'end': 1231.856, 'text': 'Objects are not valid as a React child.', 'start': 1229.755, 'duration': 2.101}, {'end': 1233.237, 'text': 'So no objects.', 'start': 1232.336, 'duration': 0.901}, {'end': 1235.539, 'text': 'That cannot be rendered to the page.', 'start': 1233.297, 'duration': 2.242}, {'end': 1239.642, 'text': "So just remember, we can't do that with objects like we can with arrays.", 'start': 1235.639, 'duration': 4.003}, {'end': 1243.844, 'text': 'Also, a Boolean will not render to the page.', 'start': 1240.402, 'duration': 3.442}, {'end': 1245.586, 'text': 'So let me go ahead and save this first.', 'start': 1243.965, 'duration': 1.621}, {'end': 1246.606, 'text': 'We get rid of the error.', 'start': 1245.646, 'duration': 0.96}, {'end': 1248.308, 'text': "Now we're back to our normal page.", 'start': 1246.867, 'duration': 1.441}, {'end': 1250.609, 'text': 'And of course, we rendered nothing there.', 'start': 1249.108, 'duration': 1.501}, {'end': 1260.977, 'text': 'But if I put in a statement like true strict equals false, Normally that would return false, right?', 'start': 1250.729, 'duration': 10.248}], 'summary': 'In react, objects and booleans cannot be rendered to the page, only arrays can be rendered.', 'duration': 31.222, 'max_score': 1229.755, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go1229755.jpg'}], 'start': 638.509, 'title': 'React app & jsx rendering', 'summary': 'Covers introduction to default app component, jsx, and local server setup. it also explains jsx rendering, expressions, and limitations with examples of rendering strings, integers, and arrays.', 'chapters': [{'end': 1052.987, 'start': 638.509, 'title': 'React app introduction & component exploration', 'summary': 'Introduces the default app component created by a new react project, explores jsx, and explains how to run the local development server using npm start. it covers the default app component, jsx, and the usage of functional components over class components.', 'duration': 414.478, 'highlights': ['The chapter introduces the default app component created by a new React project The default app component is the parent component for all others.', "The chapter explores JSX and its usage within the app component JSX resembles HTML but has differences, such as using 'class name' instead of 'class' for attributes.", "The chapter explains how to run the local development server using npm start Running 'npm start' launches a local development server at localhost port 3000, allowing for automatic updates as changes are made to the files.", 'The chapter covers the default app component, JSX, and the usage of functional components over class components Modern React uses functional components, and the default component created by Create React App serves as a basis for understanding components before creating more.']}, {'end': 1518.802, 'start': 1053.587, 'title': 'Jsx rendering and expressions', 'summary': 'Explains how jsx allows javascript expressions in code, rendering data as text, and limitations with objects and booleans, with examples demonstrating rendering of strings, integers, and arrays.', 'duration': 465.215, 'highlights': ['JSX allows JavaScript expressions in code JSX enables the use of JavaScript expressions within code, providing a powerful feature for dynamic content rendering.', 'Rendering data as text JSX renders data provided as text, including strings, integers, and arrays, demonstrating the ability to display various data types as text on the page.', 'Limitations with objects and booleans The transcript highlights the limitation of rendering objects and booleans in JSX, showcasing the inability to display objects and booleans directly on the page.']}], 'duration': 880.293, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go638509.jpg', 'highlights': ['The chapter covers the default app component, JSX, and the usage of functional components over class components Modern React uses functional components, and the default component created by Create React App serves as a basis for understanding components before creating more.', 'The chapter introduces the default app component created by a new React project The default app component is the parent component for all others.', "The chapter explores JSX and its usage within the app component JSX resembles HTML but has differences, such as using 'class name' instead of 'class' for attributes.", "The chapter explains how to run the local development server using npm start Running 'npm start' launches a local development server at localhost port 3000, allowing for automatic updates as changes are made to the files.", 'JSX allows JavaScript expressions in code JSX enables the use of JavaScript expressions within code, providing a powerful feature for dynamic content rendering.', 'Rendering data as text JSX renders data provided as text, including strings, integers, and arrays, demonstrating the ability to display various data types as text on the page.', 'Limitations with objects and booleans The transcript highlights the limitation of rendering objects and booleans in JSX, showcasing the inability to display objects and booleans directly on the page.']}, {'end': 2539.726, 'segs': [{'end': 1913.359, 'src': 'heatmap', 'start': 1575.137, 'weight': 4, 'content': [{'end': 1578.66, 'text': "We can create functional components, and they're reusable.", 'start': 1575.137, 'duration': 3.523}, {'end': 1580.782, 'text': "I'm going to use snippets.", 'start': 1579.101, 'duration': 1.681}, {'end': 1582.364, 'text': 'And this is ES7 React Redux.', 'start': 1580.982, 'duration': 1.382}, {'end': 1589.228, 'text': 'in GraphQL snippets, I believe is what it says over here, if I were to extend that.', 'start': 1585.006, 'duration': 4.222}, {'end': 1593.35, 'text': "But just go ahead and add this extension to VS Code if you don't have it.", 'start': 1589.688, 'duration': 3.662}, {'end': 1599.693, 'text': "Or if you don't add the extension, you can type out everything you see me quickly generate with the snippets.", 'start': 1593.63, 'duration': 6.063}, {'end': 1605.359, 'text': "Now, before I go ahead and create another functional component, let's look at the index.js.", 'start': 1600.333, 'duration': 5.026}, {'end': 1613.708, 'text': "Notice in this index.js, we have an import statement where we import the app component as it's injected into the DOM.", 'start': 1606.059, 'duration': 7.649}, {'end': 1616.491, 'text': "And now we're going to do the same thing.", 'start': 1614.428, 'duration': 2.063}, {'end': 1621.115, 'text': "We'll create a component and then import it, but we'll import it into the app component,", 'start': 1616.531, 'duration': 4.584}, {'end': 1625.139, 'text': 'which is the parent of all the other components in the component tree.', 'start': 1621.115, 'duration': 4.024}, {'end': 1629.641, 'text': 'So notice we have our div with the class name of app.', 'start': 1625.879, 'duration': 3.762}, {'end': 1631.642, 'text': 'And then we created a header.', 'start': 1630.061, 'duration': 1.581}, {'end': 1636.585, 'text': "So instead of this header, let's just go ahead and create a new file.", 'start': 1632.303, 'duration': 4.282}, {'end': 1639.407, 'text': "And I'll do that over here in the file tree.", 'start': 1637.586, 'duration': 1.821}, {'end': 1643.589, 'text': "And I'm going to name this file header with a capital H dot js.", 'start': 1639.547, 'duration': 4.042}, {'end': 1647.592, 'text': "And now that I have this empty file, I'm going to use the snippets.", 'start': 1644.53, 'duration': 3.062}, {'end': 1650.994, 'text': 'Now in Windows, it is Control-Alt and the letter R.', 'start': 1647.692, 'duration': 3.302}, {'end': 1659.701, 'text': 'I believe on Mac and Linux it might be Command Shift P.', 'start': 1652.296, 'duration': 7.405}, {'end': 1669.368, 'text': "If it is not Command Shift P, go ahead and press that and then search for ES7 snippets and you'll see what the control is for that.", 'start': 1659.701, 'duration': 9.667}, {'end': 1670.91, 'text': 'Let me go ahead and show you that.', 'start': 1669.669, 'duration': 1.241}, {'end': 1679.197, 'text': 'I can do that as well here where I can press Control Shift P in Windows and then if I type ES7 snippet search.', 'start': 1671.03, 'duration': 8.167}, {'end': 1684.926, 'text': 'There it shows me Ctrl-Alt-R for Windows is the command, but I could also just choose it here.', 'start': 1679.217, 'duration': 5.709}, {'end': 1697.642, 'text': "So now I'll press Ctrl-Alt-R here in Windows, and I'm going to type underscore RAF And this will help me create a functional component.", 'start': 1685.507, 'duration': 12.135}, {'end': 1699.464, 'text': 'It will generate a generic one.', 'start': 1697.702, 'duration': 1.762}, {'end': 1700.565, 'text': "So I'll press Enter.", 'start': 1699.644, 'duration': 0.921}, {'end': 1702.767, 'text': "And here's my functional component.", 'start': 1701.346, 'duration': 1.421}, {'end': 1706.431, 'text': "And notice it inserted the name header already because I've created a header.js.", 'start': 1702.827, 'duration': 3.604}, {'end': 1711.033, 'text': "And now we're not bound to use div.", 'start': 1708.152, 'duration': 2.881}, {'end': 1714.894, 'text': "It's very easy to get caught up just using divs when you're using React.", 'start': 1711.253, 'duration': 3.641}, {'end': 1719.195, 'text': "But it's best to stick with the semantic HTML.", 'start': 1715.434, 'duration': 3.761}, {'end': 1723.116, 'text': "We do not have to give up our other practices just because we're using React.", 'start': 1719.255, 'duration': 3.861}, {'end': 1728.457, 'text': "So I'm going to create a header element here instead of the div element that we have.", 'start': 1723.156, 'duration': 5.301}, {'end': 1731.838, 'text': "And now inside the header, I'm going to place an h1.", 'start': 1728.477, 'duration': 3.361}, {'end': 1735.419, 'text': 'And now we can put whatever we want here.', 'start': 1732.438, 'duration': 2.981}, {'end': 1742.366, 'text': "I'm going to call this groceries list, because if I make a list, it's usually to buy groceries.", 'start': 1735.599, 'duration': 6.767}, {'end': 1745.228, 'text': "So I'll go ahead and save that as our header.", 'start': 1742.987, 'duration': 2.241}, {'end': 1748.35, 'text': 'And there we have our header component.', 'start': 1746.809, 'duration': 1.541}, {'end': 1755.714, 'text': "It's already exported here, and that's what we need to happen to import it into the app component.", 'start': 1748.59, 'duration': 7.124}, {'end': 1766.976, 'text': "So now we can import header from, and then we have dot slash, because it's in the same folder, header.", 'start': 1756.354, 'duration': 10.622}, {'end': 1768.598, 'text': "We don't need to add the JS.", 'start': 1767.237, 'duration': 1.361}, {'end': 1770.54, 'text': "So now we've imported header.", 'start': 1769.258, 'duration': 1.282}, {'end': 1771.621, 'text': "We haven't used it yet.", 'start': 1770.58, 'duration': 1.041}, {'end': 1774.623, 'text': "And we're also going to get rid of the logo.", 'start': 1772.301, 'duration': 2.322}, {'end': 1776.946, 'text': "So let's go ahead and get rid of this import.", 'start': 1774.683, 'duration': 2.263}, {'end': 1786.8, 'text': "And now we'll go ahead and change some, not all yet, but some of the code we have inside of our JSX here.", 'start': 1778.607, 'duration': 8.193}, {'end': 1795.873, 'text': "So I'll go ahead and take this header out and I'm going to put the header in.", 'start': 1787.341, 'duration': 8.532}, {'end': 1801.358, 'text': "And you can see it's a custom element, essentially, here in the JSX that says header.", 'start': 1796.413, 'duration': 4.945}, {'end': 1802.298, 'text': "We've imported it.", 'start': 1801.498, 'duration': 0.8}, {'end': 1804.42, 'text': 'And now this has full color.', 'start': 1802.459, 'duration': 1.961}, {'end': 1805.561, 'text': "So you know we're using it.", 'start': 1804.48, 'duration': 1.081}, {'end': 1807.323, 'text': 'And we can save this.', 'start': 1806.282, 'duration': 1.041}, {'end': 1808.964, 'text': 'And of course, things will change.', 'start': 1807.343, 'duration': 1.621}, {'end': 1812.628, 'text': 'And we have our groceries list header now at the top.', 'start': 1809.625, 'duration': 3.003}, {'end': 1817.212, 'text': 'So we created a separate functional component and imported that component.', 'start': 1812.728, 'duration': 4.484}, {'end': 1819.094, 'text': "Now let's create another one.", 'start': 1817.613, 'duration': 1.481}, {'end': 1821.116, 'text': "And I'll create a new file over here.", 'start': 1819.595, 'duration': 1.521}, {'end': 1824.64, 'text': "And I'm going to just call this content.js.", 'start': 1821.296, 'duration': 3.344}, {'end': 1827.022, 'text': "And we'll do the same thing.", 'start': 1825.981, 'duration': 1.041}, {'end': 1830.666, 'text': "I'm going to press Control-Alt and the letter R because I'm on Windows.", 'start': 1827.042, 'duration': 3.624}, {'end': 1833.168, 'text': "And then it's underscore R-A-F-C-E.", 'start': 1830.746, 'duration': 2.422}, {'end': 1837.599, 'text': "And we've got our content functional component started.", 'start': 1835.077, 'duration': 2.522}, {'end': 1840.462, 'text': "Once again, I'm not going to use a div.", 'start': 1837.92, 'duration': 2.542}, {'end': 1844.866, 'text': "I'm going to use a main element, as this is the main content of the page.", 'start': 1840.562, 'duration': 4.304}, {'end': 1854.515, 'text': "And here, I'm going to paste what we had and maybe alter it just a little, because I went ahead and copied the header element that we didn't need.", 'start': 1845.647, 'duration': 8.868}, {'end': 1859.575, 'text': 'Everything else looks good for now.', 'start': 1857.754, 'duration': 1.821}, {'end': 1861.997, 'text': "Oh, we won't use the image.", 'start': 1860.556, 'duration': 1.441}, {'end': 1863.778, 'text': "And we're not importing the image.", 'start': 1862.317, 'duration': 1.461}, {'end': 1866.499, 'text': 'Remember, we would have to import that into the file if we did.', 'start': 1863.818, 'duration': 2.681}, {'end': 1869.561, 'text': 'And then I can just clean up the blank lines.', 'start': 1866.519, 'duration': 3.042}, {'end': 1876.945, 'text': "And I'll go ahead and tab over to keep the structure the way we're used to seeing it.", 'start': 1872.002, 'duration': 4.943}, {'end': 1879.847, 'text': "But we don't have handle name change here either.", 'start': 1877.486, 'duration': 2.361}, {'end': 1882.008, 'text': "So let's go back to our app component.", 'start': 1879.947, 'duration': 2.061}, {'end': 1884.53, 'text': "And let's take this logic.", 'start': 1882.809, 'duration': 1.721}, {'end': 1887.126, 'text': 'out of the app component.', 'start': 1885.885, 'duration': 1.241}, {'end': 1892.891, 'text': 'And we can put it directly into the content component.', 'start': 1888.547, 'duration': 4.344}, {'end': 1897.796, 'text': 'So now we still have our function available for our JSX.', 'start': 1894.393, 'duration': 3.403}, {'end': 1902.279, 'text': "And we can save this, but we haven't imported it yet.", 'start': 1898.536, 'duration': 3.743}, {'end': 1903.721, 'text': "So we don't see it over here.", 'start': 1902.36, 'duration': 1.361}, {'end': 1906.003, 'text': "Let's import that right here.", 'start': 1904.441, 'duration': 1.562}, {'end': 1913.359, 'text': 'import content from dot slash content.', 'start': 1908.257, 'duration': 5.102}], 'summary': 'Creating reusable functional components in es7 react redux using snippets to import into app component.', 'duration': 338.222, 'max_score': 1575.137, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go1575137.jpg'}, {'end': 1731.838, 'src': 'embed', 'start': 1701.346, 'weight': 2, 'content': [{'end': 1702.767, 'text': "And here's my functional component.", 'start': 1701.346, 'duration': 1.421}, {'end': 1706.431, 'text': "And notice it inserted the name header already because I've created a header.js.", 'start': 1702.827, 'duration': 3.604}, {'end': 1711.033, 'text': "And now we're not bound to use div.", 'start': 1708.152, 'duration': 2.881}, {'end': 1714.894, 'text': "It's very easy to get caught up just using divs when you're using React.", 'start': 1711.253, 'duration': 3.641}, {'end': 1719.195, 'text': "But it's best to stick with the semantic HTML.", 'start': 1715.434, 'duration': 3.761}, {'end': 1723.116, 'text': "We do not have to give up our other practices just because we're using React.", 'start': 1719.255, 'duration': 3.861}, {'end': 1728.457, 'text': "So I'm going to create a header element here instead of the div element that we have.", 'start': 1723.156, 'duration': 5.301}, {'end': 1731.838, 'text': "And now inside the header, I'm going to place an h1.", 'start': 1728.477, 'duration': 3.361}], 'summary': 'Using semantic html in react, replacing div with header element for better structure and accessibility.', 'duration': 30.492, 'max_score': 1701.346, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go1701346.jpg'}, {'end': 2081.187, 'src': 'embed', 'start': 2038.601, 'weight': 1, 'content': [{'end': 2046.57, 'text': "So with the three functional components that we've created today, you can see two of them encapsulate logic.", 'start': 2038.601, 'duration': 7.969}, {'end': 2047.952, 'text': 'And of course, they all could.', 'start': 2046.711, 'duration': 1.241}, {'end': 2053.257, 'text': 'But we have the handle name change encapsulated inside the content component.', 'start': 2048.513, 'duration': 4.744}, {'end': 2058.8, 'text': 'And we also have just a little bit of logic encapsulated inside the footer component.', 'start': 2054.099, 'duration': 4.701}, {'end': 2064.561, 'text': 'The parent component for all three functional components we created today is the app component.', 'start': 2059.04, 'duration': 5.521}, {'end': 2071.163, 'text': 'And we had to import all of the components that we created, header, content, and footer, into the app component.', 'start': 2065.041, 'duration': 6.122}, {'end': 2076.964, 'text': 'And then we were able to place them inside the layout of the JSX of the app component.', 'start': 2071.243, 'duration': 5.721}, {'end': 2081.187, 'text': "Now, you may have installed the React DevTools I've previously recommended.", 'start': 2077.364, 'duration': 3.823}], 'summary': 'Three functional components created, encapsulating logic and imported into the app component.', 'duration': 42.586, 'max_score': 2038.601, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go2038601.jpg'}, {'end': 2175.265, 'src': 'embed', 'start': 2152.793, 'weight': 0, 'content': [{'end': 2160.738, 'text': "And as we add more components to this project, and as you learn, we'll continue to observe these and see how the component tree grows.", 'start': 2152.793, 'duration': 7.945}, {'end': 2166.597, 'text': "Today, we're learning how to apply styles to React components.", 'start': 2162.554, 'duration': 4.043}, {'end': 2172.162, 'text': 'And to apply CSS styles, there are several ways of accomplishing this goal, really.', 'start': 2167.278, 'duration': 4.884}, {'end': 2175.265, 'text': 'And the first is to create style sheets.', 'start': 2172.822, 'duration': 2.443}], 'summary': 'Learning to apply styles to react components using style sheets.', 'duration': 22.472, 'max_score': 2152.793, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go2152793.jpg'}], 'start': 1519.343, 'title': 'React functional components and styling', 'summary': 'Covers adding and creating functional components in react, emphasizing reusability and importation, while also delving into component styling using style sheets, inline styles, and styled components.', 'chapters': [{'end': 1643.589, 'start': 1519.343, 'title': 'Adding functional components to react', 'summary': 'Discusses adding functional components to a react project, emphasizing the reusability of functional components, and the importation of components into the app component in the component tree.', 'duration': 124.246, 'highlights': ['The chapter discusses adding functional components to a React project, emphasizing the reusability of functional components, and the importation of components into the app component in the component tree.', 'The tutorial demonstrates using ES7 React Redux snippets for efficient code generation and recommends adding the extension to VS Code for quicker development.', 'The transcript highlights the process of creating a new component and importing it into the app component, the parent of all other components in the component tree.']}, {'end': 2130.136, 'start': 1644.53, 'title': 'Creating functional components in react', 'summary': 'Demonstrates the creation and usage of functional components in react, including the use of es7 snippets to quickly generate components and the importance of using semantic html. it also explains the encapsulation of logic within components and the process of importing and using these components within the app component.', 'duration': 485.606, 'highlights': ['The importance of using semantic HTML in React is emphasized, encouraging the use of specific HTML elements like header and main instead of defaulting to divs. Using semantic HTML elements like header and main instead of divs is recommended, promoting better HTML structure and accessibility.', 'The process of encapsulating logic within functional components is demonstrated, with examples such as encapsulating the handle name change function inside the content component. The encapsulation of logic within functional components is exemplified, such as encapsulating the handle name change function inside the content component.', 'The demonstration of importing and using functional components within the app component is provided, showcasing the inclusion of header, content, and footer components within the layout of the JSX. The process of importing and using functional components within the app component is illustrated, highlighting the inclusion of header, content, and footer components within the layout of the JSX.', 'The use of ES7 snippets to quickly generate functional components is shown, providing shortcuts like Ctrl-Alt-R for Windows and Command-Shift-P for Mac and Linux. The utilization of ES7 snippets to efficiently generate functional components is presented, offering shortcuts like Ctrl-Alt-R for Windows and Command-Shift-P for Mac and Linux.']}, {'end': 2539.726, 'start': 2130.196, 'title': 'React components and styling', 'summary': 'Discusses applying styles to react components, including using style sheets, inline styles, and styled components, with a focus on observing the component tree and implementing css styles.', 'duration': 409.53, 'highlights': ['Observing the component tree and learning how to apply styles to React components The chapter emphasizes the importance of observing the component tree and learning to apply styles to React components, including using style sheets, inline styles, and styled components.', 'Usage of style sheets for applying CSS styles to React components The chapter discusses the usage of style sheets for applying CSS styles to React components, highlighting the common practice of creating one file for each component and the option to use a single file for smaller projects.', "Introduction to Styled Components as an alternative for adding styles An introduction to the popular package, Styled Components, is provided as an alternative for adding styles, with a reference to the package's website and the npm installation process.", 'Demonstration of inline styles and their application in JSX The chapter demonstrates the application of inline styles in JSX, showcasing the process of creating a style object with specified keys and properties, and the impact of inline styles on visual changes.', 'Modifying CSS in index.css and its impact on the project The chapter details the modification of the index.css, including the addition of a reset, font size, min height, and changes to the font family, along with the retention of the app class for applying styles.']}], 'duration': 1020.383, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go1519343.jpg', 'highlights': ['The chapter emphasizes the importance of observing the component tree and learning to apply styles to React components, including using style sheets, inline styles, and styled components.', 'The chapter discusses adding functional components to a React project, emphasizing the reusability of functional components, and the importation of components into the app component in the component tree.', 'The importance of using semantic HTML in React is emphasized, encouraging the use of specific HTML elements like header and main instead of defaulting to divs.', 'The demonstration of importing and using functional components within the app component is provided, showcasing the inclusion of header, content, and footer components within the layout of the JSX.', 'The tutorial demonstrates using ES7 React Redux snippets for efficient code generation and recommends adding the extension to VS Code for quicker development.', 'The process of encapsulating logic within functional components is demonstrated, with examples such as encapsulating the handle name change function inside the content component.']}, {'end': 4705.406, 'segs': [{'end': 2597.21, 'src': 'embed', 'start': 2563.66, 'weight': 0, 'content': [{'end': 2565.741, 'text': 'And that is currently where all of the styles are.', 'start': 2563.66, 'duration': 2.081}, {'end': 2575.906, 'text': 'If you create a separate style sheet for each functional component, you will need to import each style sheet into each individual component,', 'start': 2566.241, 'duration': 9.665}, {'end': 2583.35, 'text': 'just as we used to have an import of app.css at the top of the functional app component.', 'start': 2575.906, 'duration': 7.444}, {'end': 2590.934, 'text': 'So just remember, every style sheet needs an import statement to the functional component that it applies to.', 'start': 2583.85, 'duration': 7.084}, {'end': 2597.21, 'text': "In today's tutorial, we're going to look at how React responds to events.", 'start': 2592.768, 'duration': 4.442}], 'summary': 'Separate style sheets for each functional component need to be imported individually. react event handling is discussed in the tutorial.', 'duration': 33.55, 'max_score': 2563.66, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go2563660.jpg'}, {'end': 2718.616, 'src': 'embed', 'start': 2691.103, 'weight': 1, 'content': [{'end': 2695.745, 'text': "So we've got a button ready to go, and it will call the handle click function.", 'start': 2691.103, 'duration': 4.642}, {'end': 2700.848, 'text': "And from there, we'll have to look at the console to see the You Clicked It output.", 'start': 2696.326, 'duration': 4.522}, {'end': 2702.269, 'text': "So I'm going to save this file.", 'start': 2700.888, 'duration': 1.381}, {'end': 2706.771, 'text': "and we should really see the button show up over here and that's fine.", 'start': 2703.129, 'duration': 3.642}, {'end': 2708.571, 'text': 'but we still need the console.', 'start': 2706.771, 'duration': 1.8}, {'end': 2715.274, 'text': "so I'm going to right click and choose inspect to show the dev tools and I've got the dev tools showing up underneath.", 'start': 2708.571, 'duration': 6.703}, {'end': 2718.616, 'text': "I'll click console going to clear out the default message.", 'start': 2715.274, 'duration': 3.342}], 'summary': 'Testing button functionality and console output for click event.', 'duration': 27.513, 'max_score': 2691.103, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go2691103.jpg'}, {'end': 2815.775, 'src': 'embed', 'start': 2789.452, 'weight': 2, 'content': [{'end': 2793.293, 'text': "So we've made a second button element and this will call handle click two.", 'start': 2789.452, 'duration': 3.841}, {'end': 2796.915, 'text': "But right now it's not passing in the parameter.", 'start': 2794.054, 'duration': 2.861}, {'end': 2801.938, 'text': 'So how do we do that? Well, we need an anonymous function here.', 'start': 2797.376, 'duration': 4.562}, {'end': 2809.331, 'text': "And so we can start with the operators and the arrow like we'd see in an anonymous function.", 'start': 2803.407, 'duration': 5.924}, {'end': 2814.334, 'text': 'And now handleClick2 can be called, and we can pass in a name.', 'start': 2809.831, 'duration': 4.503}, {'end': 2815.775, 'text': "So I'll pass in my name.", 'start': 2814.434, 'duration': 1.341}], 'summary': 'Creating a second button element to call handle click two, passing parameters through an anonymous function.', 'duration': 26.323, 'max_score': 2789.452, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go2789452.jpg'}, {'end': 3136.942, 'src': 'embed', 'start': 3110.09, 'weight': 6, 'content': [{'end': 3115.053, 'text': "And we'll learn how to do that with state as we learn about useState in the next tutorial.", 'start': 3110.09, 'duration': 4.963}, {'end': 3120.535, 'text': "Today, we're going to talk about a React hook called useState.", 'start': 3116.673, 'duration': 3.862}, {'end': 3123.516, 'text': "So let's look at the content component.", 'start': 3120.995, 'duration': 2.521}, {'end': 3127.798, 'text': 'In the previous tutorial in this series, we learned about how to handle click events.', 'start': 3123.836, 'duration': 3.962}, {'end': 3130.459, 'text': 'So we see several handle click functions here.', 'start': 3127.978, 'duration': 2.481}, {'end': 3133.801, 'text': 'And above, we have a handle name change function.', 'start': 3130.98, 'duration': 2.821}, {'end': 3136.942, 'text': "that we've been calling since early on in the series.", 'start': 3134.321, 'duration': 2.621}], 'summary': 'Learn about react hook usestate for state management.', 'duration': 26.852, 'max_score': 3110.09, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go3110090.jpg'}, {'end': 3497.409, 'src': 'heatmap', 'start': 3170.381, 'weight': 0.725, 'content': [{'end': 3176.426, 'text': 'And React actually gets its name because it reacts to changes in the state of the component.', 'start': 3170.381, 'duration': 6.045}, {'end': 3182.891, 'text': 'And when there are changes, then it re-renders the JSX that we find here in the return statement.', 'start': 3176.546, 'duration': 6.345}, {'end': 3189.816, 'text': "I'm going to press control B to hide the file tree because we'll stay inside the content component for this tutorial.", 'start': 3183.251, 'duration': 6.565}, {'end': 3195.781, 'text': 'And back at the very top of this component now, we need to import our React hook.', 'start': 3190.577, 'duration': 5.204}, {'end': 3198.803, 'text': 'And that React hook is called useState.', 'start': 3196.321, 'duration': 2.482}, {'end': 3203.647, 'text': "So we'll start with import and then curly braces and useState.", 'start': 3199.003, 'duration': 4.644}, {'end': 3207.95, 'text': 'And we use camel case there with state having a capital S.', 'start': 3203.967, 'duration': 3.983}, {'end': 3209.292, 'text': "And from there, we'll say from.", 'start': 3207.95, 'duration': 1.342}, {'end': 3215.469, 'text': 'And now we can use the useState hook inside of our component.', 'start': 3210.941, 'duration': 4.528}, {'end': 3221.194, 'text': 'So we will start out by defining what we will use for state.', 'start': 3216.431, 'duration': 4.763}, {'end': 3223.997, 'text': "And we're going to use a name.", 'start': 3221.875, 'duration': 2.122}, {'end': 3226.919, 'text': "And then we're going to use set name.", 'start': 3224.837, 'duration': 2.082}, {'end': 3230.662, 'text': 'So this is array destructuring that we get from use state.', 'start': 3227.079, 'duration': 3.583}, {'end': 3236.667, 'text': 'And the first value, name, will provide the current state at any given point in time.', 'start': 3231.163, 'duration': 5.504}, {'end': 3239.97, 'text': 'And then set name is much like you would think.', 'start': 3237.228, 'duration': 2.742}, {'end': 3241.712, 'text': 'We can set the state with it.', 'start': 3240.371, 'duration': 1.341}, {'end': 3245.955, 'text': 'So if you really want to think about it this way, you could call name the getter.', 'start': 3241.812, 'duration': 4.143}, {'end': 3251.282, 'text': "and set name the setter, if you're familiar with vanilla JavaScript objects.", 'start': 3246.836, 'duration': 4.446}, {'end': 3255.507, 'text': "So we'll set this equal to use state.", 'start': 3252.283, 'duration': 3.224}, {'end': 3258.09, 'text': 'And we put in parentheses.', 'start': 3256.188, 'duration': 1.902}, {'end': 3263.537, 'text': 'And now we can put data in here as default data for when the component loads.', 'start': 3258.571, 'duration': 4.966}, {'end': 3267.823, 'text': 'And this would be the original state or default state.', 'start': 3264.538, 'duration': 3.285}, {'end': 3274.612, 'text': "And I'm just going to put in my name, Dave, to provide a name to begin with for the default state.", 'start': 3267.923, 'duration': 6.689}, {'end': 3285.024, 'text': 'And now that we have name, I can replace our handle name change down here in the JSX with the value of the current state for hello name,', 'start': 3274.992, 'duration': 10.032}, {'end': 3292.089, 'text': 'and when I save this, we should see the change and yes, it now says hello Dave over here on the right in our application.', 'start': 3285.024, 'duration': 7.065}, {'end': 3294.21, 'text': 'but this will always say hello Dave.', 'start': 3292.089, 'duration': 2.121}, {'end': 3298.734, 'text': "right now it is just getting the current state the default state and we're never setting it.", 'start': 3294.21, 'duration': 4.524}, {'end': 3308.961, 'text': 'so we need to change our handle name change function and what we can do is, instead of returning the name or the random name value,', 'start': 3298.734, 'duration': 10.227}, {'end': 3317.008, 'text': 'we can use the setName method here from the useState and we will pass in the value.', 'start': 3308.961, 'duration': 8.047}, {'end': 3322.973, 'text': 'So now handleNameChange will set a name as the current state.', 'start': 3317.108, 'duration': 5.865}, {'end': 3330.879, 'text': "So let's go ahead and call the handleNameChange function now for one of the button clicks.", 'start': 3323.633, 'duration': 7.246}, {'end': 3335.811, 'text': "So instead of handleClick, Let's put in a handle name change.", 'start': 3331.159, 'duration': 4.652}, {'end': 3337.794, 'text': "And we'll just use a reference here.", 'start': 3335.931, 'duration': 1.863}, {'end': 3342.942, 'text': "And let's go ahead and change the text of the button to change name.", 'start': 3337.814, 'duration': 5.128}, {'end': 3345.386, 'text': "And we'll save.", 'start': 3344.645, 'duration': 0.741}, {'end': 3355.281, 'text': 'And now when we click the Change Name button, we should call the HandleNameChange function, and that should change the state.', 'start': 3346.556, 'duration': 8.725}, {'end': 3357.223, 'text': 'Now, we might generate the same name.', 'start': 3355.362, 'duration': 1.861}, {'end': 3361.365, 'text': 'So after I click once, it may be Dave, or it may be Bob, or it may be Kevin.', 'start': 3357.303, 'duration': 4.062}, {'end': 3363.006, 'text': "That's just how our function works.", 'start': 3361.405, 'duration': 1.601}, {'end': 3365.508, 'text': 'It could randomly be any one of the three.', 'start': 3363.567, 'duration': 1.941}, {'end': 3366.829, 'text': "So I'll click it several times.", 'start': 3365.528, 'duration': 1.301}, {'end': 3371.484, 'text': 'We got Bob, we got Kevin, and back to Dave.', 'start': 3367.981, 'duration': 3.503}, {'end': 3376.788, 'text': 'Now it could easily do the same name two or three times in a row as it just did with Bob.', 'start': 3371.984, 'duration': 4.804}, {'end': 3380.571, 'text': "And now we're back to Dave, back to Bob, back to Kevin.", 'start': 3377.068, 'duration': 3.503}, {'end': 3382.592, 'text': 'So the button works.', 'start': 3381.111, 'duration': 1.481}, {'end': 3384.413, 'text': 'It changes the state.', 'start': 3383.072, 'duration': 1.341}, {'end': 3392.637, 'text': 'And by setting that state change, React re-renders very quickly our content component.', 'start': 3385.294, 'duration': 7.343}, {'end': 3394.477, 'text': 'And we see the name change.', 'start': 3393.037, 'duration': 1.44}, {'end': 3401.519, 'text': 'Notice we used const here because we never want to try to reassign the name value here directly.', 'start': 3395.017, 'duration': 6.502}, {'end': 3405.421, 'text': 'We never want to try to directly modify the state of the component.', 'start': 3401.58, 'duration': 3.841}, {'end': 3408.762, 'text': 'We always want to use set name when we change that.', 'start': 3405.461, 'duration': 3.301}, {'end': 3410.643, 'text': 'And there are some gotchas.', 'start': 3409.362, 'duration': 1.281}, {'end': 3414.105, 'text': "It's kind of learning how to think about state in the correct way.", 'start': 3410.803, 'duration': 3.302}, {'end': 3416.846, 'text': "So let's look at some of these gotchas.", 'start': 3414.725, 'duration': 2.121}, {'end': 3419.568, 'text': "And I'm going to define another one.", 'start': 3417.046, 'duration': 2.522}, {'end': 3423.61, 'text': "Let's say count and set count.", 'start': 3419.608, 'duration': 4.002}, {'end': 3426.972, 'text': "I'll have to spell count correctly there the second time.", 'start': 3423.63, 'duration': 3.342}, {'end': 3428.793, 'text': "And we'll once again use state.", 'start': 3427.372, 'duration': 1.421}, {'end': 3435.194, 'text': "And I'll set the initial state, or the default state, if you will, to 0.", 'start': 3429.833, 'duration': 5.361}, {'end': 3440.076, 'text': "Now in handleClick, let's go ahead and log the value of the count.", 'start': 3435.194, 'duration': 4.882}, {'end': 3441.696, 'text': "So we'll just put count there.", 'start': 3440.356, 'duration': 1.34}, {'end': 3443.836, 'text': "And we'll save this much.", 'start': 3442.636, 'duration': 1.2}, {'end': 3447.397, 'text': "And let's look in our JSX to see where we could call handleClick.", 'start': 3444.017, 'duration': 3.38}, {'end': 3450.038, 'text': "And we don't really have it being called right now.", 'start': 3447.837, 'duration': 2.201}, {'end': 3457.3, 'text': "So I'll go ahead and replace handleClick2 in this anonymous function with handleClick for our second button.", 'start': 3450.098, 'duration': 7.202}, {'end': 3459.102, 'text': "And we'll save.", 'start': 3458.36, 'duration': 0.742}, {'end': 3465.495, 'text': 'Now I need to right-click on the application and choose Inspect to show the console window in DevTools.', 'start': 3459.703, 'duration': 5.792}, {'end': 3468.977, 'text': "And we're on elements right now.", 'start': 3467.576, 'duration': 1.401}, {'end': 3470.257, 'text': 'There is console.', 'start': 3468.997, 'duration': 1.26}, {'end': 3475.078, 'text': "Let's clear out everything so we can see what shows in the console here.", 'start': 3470.757, 'duration': 4.321}, {'end': 3478.799, 'text': "And I've got my dev tools docked to the bottom instead of to the right.", 'start': 3475.278, 'duration': 3.521}, {'end': 3482.82, 'text': 'You can change that with the three dots here and dock wherever you want to.', 'start': 3479.299, 'duration': 3.521}, {'end': 3488.242, 'text': 'So up here, if we click this second button, it should call handle click.', 'start': 3483.721, 'duration': 4.521}, {'end': 3497.409, 'text': 'And when we call handle click, what should happen is the count Variable.', 'start': 3489.262, 'duration': 8.147}], 'summary': 'React re-renders jsx based on state changes and usestate hook manages state', 'duration': 327.028, 'max_score': 3170.381, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go3170381.jpg'}, {'end': 3255.507, 'src': 'embed', 'start': 3227.079, 'weight': 3, 'content': [{'end': 3230.662, 'text': 'So this is array destructuring that we get from use state.', 'start': 3227.079, 'duration': 3.583}, {'end': 3236.667, 'text': 'And the first value, name, will provide the current state at any given point in time.', 'start': 3231.163, 'duration': 5.504}, {'end': 3239.97, 'text': 'And then set name is much like you would think.', 'start': 3237.228, 'duration': 2.742}, {'end': 3241.712, 'text': 'We can set the state with it.', 'start': 3240.371, 'duration': 1.341}, {'end': 3245.955, 'text': 'So if you really want to think about it this way, you could call name the getter.', 'start': 3241.812, 'duration': 4.143}, {'end': 3251.282, 'text': "and set name the setter, if you're familiar with vanilla JavaScript objects.", 'start': 3246.836, 'duration': 4.446}, {'end': 3255.507, 'text': "So we'll set this equal to use state.", 'start': 3252.283, 'duration': 3.224}], 'summary': 'Array destructuring from use state provides getter and setter for state.', 'duration': 28.428, 'max_score': 3227.079, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go3227079.jpg'}, {'end': 3440.076, 'src': 'embed', 'start': 3409.362, 'weight': 4, 'content': [{'end': 3410.643, 'text': 'And there are some gotchas.', 'start': 3409.362, 'duration': 1.281}, {'end': 3414.105, 'text': "It's kind of learning how to think about state in the correct way.", 'start': 3410.803, 'duration': 3.302}, {'end': 3416.846, 'text': "So let's look at some of these gotchas.", 'start': 3414.725, 'duration': 2.121}, {'end': 3419.568, 'text': "And I'm going to define another one.", 'start': 3417.046, 'duration': 2.522}, {'end': 3423.61, 'text': "Let's say count and set count.", 'start': 3419.608, 'duration': 4.002}, {'end': 3426.972, 'text': "I'll have to spell count correctly there the second time.", 'start': 3423.63, 'duration': 3.342}, {'end': 3428.793, 'text': "And we'll once again use state.", 'start': 3427.372, 'duration': 1.421}, {'end': 3435.194, 'text': "And I'll set the initial state, or the default state, if you will, to 0.", 'start': 3429.833, 'duration': 5.361}, {'end': 3440.076, 'text': "Now in handleClick, let's go ahead and log the value of the count.", 'start': 3435.194, 'duration': 4.882}], 'summary': 'Learning state management with initial state set to 0.', 'duration': 30.714, 'max_score': 3409.362, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go3409362.jpg'}, {'end': 3746.694, 'src': 'embed', 'start': 3719.774, 'weight': 5, 'content': [{'end': 3725.438, 'text': "Okay, I understand if that's a little confusing, but what I really hope you can take away from this,", 'start': 3719.774, 'duration': 5.664}, {'end': 3734.005, 'text': "besides avoiding that gotcha is that you need to use const because you don't ever want to allow the state to be changed directly,", 'start': 3725.438, 'duration': 8.567}, {'end': 3735.346, 'text': 'such as name or count.', 'start': 3734.005, 'duration': 1.341}, {'end': 3739.689, 'text': 'We can name these whatever we want to, and the convention is to name them.', 'start': 3735.446, 'duration': 4.243}, {'end': 3746.694, 'text': "what you're holding essentially describe the data and then, in the function or the method you could say that follows it.", 'start': 3739.689, 'duration': 7.005}], 'summary': 'Use const to avoid direct state changes, like name or count.', 'duration': 26.92, 'max_score': 3719.774, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go3719774.jpg'}, {'end': 4210.8, 'src': 'embed', 'start': 4183.529, 'weight': 7, 'content': [{'end': 4186.951, 'text': 'But each list item in React needs a key.', 'start': 4183.529, 'duration': 3.422}, {'end': 4193.054, 'text': "So we're going to set an attribute called key equal to an expression.", 'start': 4187.191, 'duration': 5.863}, {'end': 4196.075, 'text': "And in this expression, we'll say item.id.", 'start': 4193.214, 'duration': 2.861}, {'end': 4200.156, 'text': 'So we can just use the ID number of the item as the key.', 'start': 4196.095, 'duration': 4.061}, {'end': 4203.578, 'text': 'Now, React needs keys for each list item.', 'start': 4200.657, 'duration': 2.921}, {'end': 4210.8, 'text': 'And this helps React identify which items have changed, which items have been added or which items have been removed,', 'start': 4203.998, 'duration': 6.802}], 'summary': 'In react, each list item needs a key to help identify changes or additions. use item.id as the key.', 'duration': 27.271, 'max_score': 4183.529, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go4183529.jpg'}, {'end': 4645.303, 'src': 'embed', 'start': 4617.018, 'weight': 8, 'content': [{'end': 4620.12, 'text': 'And so the item class applies to each list item.', 'start': 4617.018, 'duration': 3.102}, {'end': 4623.163, 'text': 'And you can see the different things that we apply here.', 'start': 4620.601, 'duration': 2.562}, {'end': 4625.545, 'text': 'And here is the input type checkbox.', 'start': 4623.203, 'duration': 2.342}, {'end': 4632.671, 'text': "Once again, the type checkbox for a focus and possibly the label where we'll give it an underline if it has focus.", 'start': 4626.146, 'duration': 6.525}, {'end': 4636.595, 'text': 'And then here is some more styling just for the label.', 'start': 4633.292, 'duration': 3.303}, {'end': 4638.937, 'text': "Here's some styling for the SVG.", 'start': 4636.995, 'duration': 1.942}, {'end': 4645.303, 'text': "And once again, that SVG icon being a button, we're applying styles for focus and hover as well.", 'start': 4639.377, 'duration': 5.926}], 'summary': 'The transcript discusses applying styles to list items, checkboxes, labels, and svg icons for focus and hover.', 'duration': 28.285, 'max_score': 4617.018, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go4617018.jpg'}], 'start': 2540.186, 'title': 'React components and state management', 'summary': 'Covers styling, event handling, and state management in react. it emphasizes the importance of importing css styles, creating event handlers, and utilizing usestate hook for state management, with examples provided for better understanding.', 'chapters': [{'end': 2590.934, 'start': 2540.186, 'title': 'React app styling', 'summary': 'Discusses the importance of importing css styles in react functional components and the need for a separate style sheet for each functional component.', 'duration': 50.748, 'highlights': ['The importance of importing CSS styles in React functional components is emphasized as without the import, none of the styles will be applied.', 'Creating a separate style sheet for each functional component is recommended, and it is essential to import each style sheet into the individual component.']}, {'end': 3067.501, 'start': 2592.768, 'title': 'React event handling tutorial', 'summary': 'Explores how to handle events in react, including creating event handlers, passing parameters to event handlers, accessing event objects, and listening for different types of events such as click and double click.', 'duration': 474.733, 'highlights': ['The chapter explores creating event handlers in React and specifically focuses on click event types which are common. The tutorial focuses on explaining how to create event handlers in React, specifically emphasizing the common click event types.', "The tutorial demonstrates the process of creating a separate function called handle click, and associating it with a button to log 'You clicked it' to the console upon clicking. The tutorial demonstrates the process of creating a separate function called handle click, associating it with a button, and logging 'You clicked it' to the console upon clicking.", 'It explains how to pass parameters to a function like handle click and demonstrates creating a new function, handleClick2, to log the passed parameter to the console upon button click. The tutorial explains how to pass parameters to a function like handle click, and demonstrates creating a new function, handleClick2, to log the passed parameter to the console upon button click.', 'The tutorial illustrates accessing the event object and logging it to the console, as well as accessing specific properties of the event object, such as the target element. The tutorial illustrates accessing the event object and logging it to the console, as well as accessing specific properties of the event object, such as the target element.', "It demonstrates listening for different types of events, such as double click, and associating the handle click function with the on double click event to log 'You clicked it' upon double clicking. The tutorial demonstrates listening for different types of events, such as double click, and associates the handle click function with the on double click event to log 'You clicked it' upon double clicking."]}, {'end': 3380.571, 'start': 3068.101, 'title': 'React: handling state with usestate', 'summary': 'Introduces the usestate hook in react, explaining how to use it to manage state in a component, including defining state, updating state, and reacting to state changes, while emphasizing the shift from vanilla javascript to a more reactful approach.', 'duration': 312.47, 'highlights': ['The chapter focuses on introducing the useState hook in React and its usage to manage state in a component. It explains how to define state and update state using the useState hook.', "It emphasizes the transition from vanilla JavaScript to a more Reactful approach in handling state by reacting to changes and re-rendering the component. The chapter stresses the importance of React's ability to react to changes in the state of the component and re-render the JSX accordingly.", 'It demonstrates using array destructuring to define state variables and the setter function provided by useState to update the state. The chapter illustrates using array destructuring to define state variables and the setter function set name provided by useState to update the state.']}, {'end': 3694.7, 'start': 3381.111, 'title': 'React state management', 'summary': 'Discusses the correct way of managing state in react, highlighting the use of state, avoiding direct state modification, and the behavior of state changes using set state, illustrated with examples and logging the current state.', 'duration': 313.589, 'highlights': ['The chapter discusses the correct way of managing state in React The transcript emphasizes the importance of understanding the correct way of managing state in React to avoid potential issues and errors.', 'using state, avoiding direct state modification, and the behavior of state changes using set state It emphasizes the use of state and the importance of avoiding direct state modification to ensure proper state management, and highlights the behavior of state changes using the set state function.', 'illustrated with examples and logging the current state The chapter provides examples to illustrate the concept of state management and demonstrates logging the current state to understand the behavior of state changes.']}, {'end': 4705.406, 'start': 3694.98, 'title': 'Understanding react state and building lists', 'summary': 'Explains the concept of state in react, emphasizing the use of const to avoid direct state changes, demonstrating the use of usestate hook to manage state, and delving into building lists using map and adding css to enhance list appearance.', 'duration': 1010.426, 'highlights': ['The chapter emphasizes using const to avoid direct state changes. Using const is advocated to prevent direct changes to the state, offering a clear guideline for naming state variables and their corresponding setter functions.', 'Demonstration of using the useState hook to manage state. The tutorial illustrates the process of utilizing the useState hook to set default states, modify state values, and manage multiple states within a component.', 'Explanation of building lists using map and the importance of providing a key attribute for each list item. The tutorial elucidates the use of map to iterate through items and generate a list, underscoring the significance of assigning a unique key to each list item for efficient React rendering.', 'Addition of CSS to enhance the appearance of the list items. CSS styling is applied to the list, focusing on unordered list styles, item class attributes, checkbox styles, and SVG button styles, resulting in an improved visual presentation of the list items.']}], 'duration': 2165.22, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go2540186.jpg', 'highlights': ['The chapter emphasizes the importance of importing CSS styles in React functional components as without the import, none of the styles will be applied.', "The tutorial demonstrates the process of creating a separate function called handle click, associating it with a button, and logging 'You clicked it' to the console upon clicking.", 'The tutorial explains how to pass parameters to a function like handle click and demonstrates creating a new function, handleClick2, to log the passed parameter to the console upon button click.', 'The chapter illustrates using array destructuring to define state variables and the setter function set name provided by useState to update the state.', 'The chapter emphasizes the use of state and the importance of avoiding direct state modification to ensure proper state management, and highlights the behavior of state changes using the set state function.', 'Using const is advocated to prevent direct changes to the state, offering a clear guideline for naming state variables and their corresponding setter functions.', 'The tutorial illustrates the process of utilizing the useState hook to set default states, modify state values, and manage multiple states within a component.', 'The tutorial elucidates the use of map to iterate through items and generate a list, underscoring the significance of assigning a unique key to each list item for efficient React rendering.', 'CSS styling is applied to the list, focusing on unordered list styles, item class attributes, checkbox styles, and SVG button styles, resulting in an improved visual presentation of the list items.']}, {'end': 5518.538, 'segs': [{'end': 4761.038, 'src': 'embed', 'start': 4730.187, 'weight': 0, 'content': [{'end': 4733.15, 'text': 'And now we see the check box applied over here.', 'start': 4730.187, 'duration': 2.963}, {'end': 4740.937, 'text': 'So we need to work with the state, and we need to do that by adding a handler for the click in the check box.', 'start': 4733.25, 'duration': 7.687}, {'end': 4745.622, 'text': "Let's go ahead and create a function now underneath our useState.", 'start': 4741.437, 'duration': 4.185}, {'end': 4749.125, 'text': "And we're going to call this handleCheck.", 'start': 4745.762, 'duration': 3.363}, {'end': 4755.872, 'text': "And from there, it's going to accept the ID, which is the key of the list item.", 'start': 4750.046, 'duration': 5.826}, {'end': 4761.038, 'text': 'So we have the ID property and remember we pass that in as the key for each item.', 'start': 4756.934, 'duration': 4.104}], 'summary': 'Creating a handlecheck function to work with the state and accept the id for each item.', 'duration': 30.851, 'max_score': 4730.187, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go4730187.jpg'}, {'end': 4827.388, 'src': 'embed', 'start': 4802.347, 'weight': 2, 'content': [{'end': 4810.915, 'text': "And now inside the expression for the onChange, we can't just call handleCheck because we need to pass in the ID.", 'start': 4802.347, 'duration': 8.568}, {'end': 4812.516, 'text': "And this won't work.", 'start': 4811.596, 'duration': 0.92}, {'end': 4815.499, 'text': 'We need to be able to pass in a parameter to this.', 'start': 4812.596, 'duration': 2.903}, {'end': 4817.181, 'text': 'And this just references the function.', 'start': 4815.539, 'duration': 1.642}, {'end': 4818.863, 'text': 'So this would not help us out.', 'start': 4817.301, 'duration': 1.562}, {'end': 4821.825, 'text': 'What we need here is an anonymous function.', 'start': 4818.923, 'duration': 2.902}, {'end': 4827.388, 'text': 'And now with the anonymous function, we can call another function inside of it.', 'start': 4822.586, 'duration': 4.802}], 'summary': 'Using an anonymous function to pass parameters for onchange event.', 'duration': 25.041, 'max_score': 4802.347, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go4802347.jpg'}, {'end': 5077.675, 'src': 'embed', 'start': 5055.298, 'weight': 3, 'content': [{'end': 5064.968, 'text': "it's just a little long, but this is using a higher order function map, rather than writing imperative code and possibly a for loop or for each loop.", 'start': 5055.298, 'duration': 9.67}, {'end': 5067.131, 'text': 'that would take up a little more space.', 'start': 5064.968, 'duration': 2.163}, {'end': 5068.793, 'text': "so we're not finished yet,", 'start': 5067.131, 'duration': 1.662}, {'end': 5077.675, 'text': "but now we've created our new list items array using map And we've altered the item that matches to change the status of it.", 'start': 5068.793, 'duration': 8.882}], 'summary': 'Using map as a higher order function to create a new list and alter item status.', 'duration': 22.377, 'max_score': 5055.298, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go5055298.jpg'}, {'end': 5197.952, 'src': 'embed', 'start': 5171.735, 'weight': 1, 'content': [{'end': 5181.121, 'text': "And we'll see that reflected as well in the state of the application or the state of the component here that's true, false, false also.", 'start': 5171.735, 'duration': 9.386}, {'end': 5188.425, 'text': "Now we can change it, but we're just not saving that state and bringing it back when the application loads yet.", 'start': 5181.561, 'duration': 6.864}, {'end': 5195.11, 'text': "That said, let's get part of the way there by adding one last line to our handle check function.", 'start': 5188.866, 'duration': 6.244}, {'end': 5197.952, 'text': "And to do that, I'm going to use local storage.", 'start': 5195.63, 'duration': 2.322}], 'summary': 'The application state is not being saved and brought back when the application loads, but local storage will be used to address this.', 'duration': 26.217, 'max_score': 5171.735, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go5171735.jpg'}], 'start': 4705.607, 'title': 'Managing checkbox state and event handling', 'summary': 'Covers updating the state to manage check boxes, implementing event handling, higher order functions like map and filter, and local storage for successful functionality of the checkbox and label elements, with a specific example demonstrating state update and event handling.', 'chapters': [{'end': 4779.775, 'start': 4705.607, 'title': 'Managing check boxes and state', 'summary': 'Covers updating the state to manage the check boxes, where initially all boxes are unchecked, and then a function is created to handle the click event and update the state with the checked status, demonstrated with a specific example.', 'duration': 74.168, 'highlights': ['A function named handleCheck is created to manage the click event of the check boxes, accepting the ID of the list item as a parameter and logging it to the console, demonstrating a practical approach to managing state with specific examples.', 'The chapter discusses the reason why the boxes are initially not allowed to be checked, attributing it to the assigned check status (item.checked) originating from the state, where all values are initially false, showcasing the initial state of the check boxes and the requirement to update the state when a check box is clicked.']}, {'end': 5518.538, 'start': 4780.116, 'title': 'React checkbox event handling', 'summary': 'Covers adding an onchange event for checkbox, using higher order functions like map and filter, and implementing local storage to save and retrieve state, leading to successful functionality of the checkbox and label elements.', 'duration': 738.422, 'highlights': ['Implemented onChange event for checkbox and used anonymous function to pass parameters to handleCheck function, achieving successful state change The transcript covers the implementation of an onChange event for the checkbox, utilizing an anonymous function to pass parameters to the handleCheck function, resulting in a successful state change when checking or unchecking the checkbox.', "Utilized higher order function 'map' to create new array of list items and altered the checked status, providing a more concise and efficient approach compared to imperative code The discussion emphasizes the use of the higher order function 'map' to create a new array of list items and efficiently alter the checked status, highlighting the benefits of using a declarative approach with map over writing imperative code.", 'Utilized local storage to save and retrieve state, enabling persistence of checkbox states even after page reload The usage of local storage to save and retrieve state is demonstrated, showcasing its role in persisting checkbox states even after a page reload, contributing to a seamless user experience.']}], 'duration': 812.931, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go4705607.jpg', 'highlights': ['A function named handleCheck is created to manage the click event of the check boxes, showcasing the initial state of the check boxes and the requirement to update the state when a check box is clicked.', 'Utilized local storage to save and retrieve state, enabling persistence of checkbox states even after page reload', 'Implemented onChange event for checkbox and used anonymous function to pass parameters to handleCheck function, achieving successful state change', "Utilized higher order function 'map' to create new array of list items and altered the checked status, providing a more concise and efficient approach compared to imperative code"]}, {'end': 7479.123, 'segs': [{'end': 5546.449, 'src': 'embed', 'start': 5518.538, 'weight': 0, 'content': [{'end': 5522.899, 'text': 'after that, our handle delete function is just like our handle check function.', 'start': 5518.538, 'duration': 4.361}, {'end': 5535.063, 'text': "so we'll set the state with the list items and we'll also save that same change to the shopping list that we have saved in the local storage.", 'start': 5522.899, 'duration': 12.164}, {'end': 5543.727, 'text': 'so now we can save this And if we go ahead and click one of the trash cans over here now we should be able to delete an item.', 'start': 5535.063, 'duration': 8.664}, {'end': 5546.449, 'text': "So let's go ahead and give it a try on item two.", 'start': 5543.847, 'duration': 2.602}], 'summary': 'The handle delete function updates the state and local storage, allowing items to be deleted from the shopping list.', 'duration': 27.911, 'max_score': 5518.538, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go5518538.jpg'}, {'end': 5755.722, 'src': 'embed', 'start': 5730.285, 'weight': 2, 'content': [{'end': 5738.791, 'text': 'And that will be in the next tutorial, because some of our other components may need to access properties from our list,', 'start': 5730.285, 'duration': 8.506}, {'end': 5748.502, 'text': "and right now it's solely contained within this content component and we need to share some of this data to other components.", 'start': 5738.791, 'duration': 9.711}, {'end': 5750.505, 'text': "That's coming up in the next tutorial.", 'start': 5748.803, 'duration': 1.702}, {'end': 5755.722, 'text': "Today, we're learning about React props and prop drilling.", 'start': 5752.099, 'duration': 3.623}], 'summary': 'Next tutorial will cover sharing data with other components. today: learning react props and prop drilling.', 'duration': 25.437, 'max_score': 5730.285, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go5730285.jpg'}, {'end': 6543.043, 'src': 'embed', 'start': 6519.486, 'weight': 1, 'content': [{'end': 6529.153, 'text': 'I think we can use some abstraction and create a couple of more components, maybe a reusable component that can declutter a lot of what we see here.', 'start': 6519.486, 'duration': 9.667}, {'end': 6532.455, 'text': "I'm going to close this terminal window at the bottom as well.", 'start': 6529.633, 'duration': 2.822}, {'end': 6538.12, 'text': "Now, as we look at everything that we have in this content.js and it's a little bigger than the other files.", 'start': 6532.936, 'duration': 5.184}, {'end': 6543.043, 'text': 'all this JSX remember, we have this, so it gives us a.', 'start': 6538.12, 'duration': 4.923}], 'summary': 'Proposing the creation of reusable components to declutter the content.js file.', 'duration': 23.557, 'max_score': 6519.486, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go6519486.jpg'}, {'end': 7412.154, 'src': 'embed', 'start': 7380.529, 'weight': 4, 'content': [{'end': 7384.012, 'text': "And with that finished, I'll go ahead and close the terminal window.", 'start': 7380.529, 'duration': 3.483}, {'end': 7386.715, 'text': 'And now you can see our dev dependencies are empty.', 'start': 7384.072, 'duration': 2.643}, {'end': 7394.141, 'text': 'And when we scroll up in the package JSON, React icons are listed under the regular dependencies for production.', 'start': 7387.255, 'duration': 6.886}, {'end': 7395.343, 'text': "And that's where we need them.", 'start': 7394.342, 'duration': 1.001}, {'end': 7398.365, 'text': "Of course, we're running dev over here as we develop.", 'start': 7395.403, 'duration': 2.962}, {'end': 7400.507, 'text': "And so it didn't impact what we were doing.", 'start': 7398.425, 'duration': 2.082}, {'end': 7401.949, 'text': 'I just wanted to correct that.', 'start': 7400.607, 'duration': 1.342}, {'end': 7412.154, 'text': "Also, From the props tutorial, we went ahead and in the item list, we're adding the key as we should for each line item right here.", 'start': 7402.509, 'duration': 9.645}], 'summary': 'Dev dependencies are empty. react icons listed under regular dependencies for production. key added in item list.', 'duration': 31.625, 'max_score': 7380.529, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go7380529.jpg'}], 'start': 5518.538, 'title': 'React component and state management', 'summary': 'Covers react state updates, local storage management, implementation of conditional messages, setting justify-content, working with props, default props, prop drilling, and refactoring content.js with abstraction, emphasizing reusable components and efficient component creation.', 'chapters': [{'end': 5778.659, 'start': 5518.538, 'title': 'React state and prop drilling', 'summary': 'Demonstrates handling state updates and local storage management to delete items from a shopping list, including implementing a conditional message for an empty list, culminating with an introduction to react props and prop drilling.', 'duration': 260.121, 'highlights': ['The chapter demonstrates handling state updates and local storage management to delete items from a shopping list. The tutorial explains how to set the state with the list items and save the changes to the shopping list in local storage, enabling the deletion of items from the list.', 'Implementing a conditional message for an empty list. A conditional expression is utilized to display a message if the shopping list is empty, enhancing the user experience by providing feedback for an empty list.', 'Introduction to React props and prop drilling. The tutorial introduces React props and prop drilling, which allows the passing of data from parent components to child components, setting the stage for sharing data across different components in future tutorials.']}, {'end': 6261.432, 'start': 5779.139, 'title': 'React app component tutorial', 'summary': 'Demonstrates setting justify-content, working with props, default props, and drilling props down to child components in a react application tutorial.', 'duration': 482.293, 'highlights': ['The tutorial series is building a React application for a groceries list. The React application being built is a groceries list.', 'Changing the justify content setting to flex-start aligns the list to the top, as expected. Changing the justify content setting to flex-start aligns the list to the top, providing the expected layout.', 'The tutorial covers creating three components: header, content, and footer. The tutorial involves creating three components: header, content, and footer.', "Demonstrates working with props inside the header component, passing a prop called 'title' as a string. The tutorial demonstrates working with props inside the header component by passing a prop called 'title' as a string.", 'Explains the concept of destructuring in JavaScript for easier handling of props. The tutorial explains the concept of destructuring in JavaScript for easier handling of props.']}, {'end': 6501.955, 'start': 6261.492, 'title': 'React state management and component communication', 'summary': 'Covers the process of fixing errors related to state management, importing usestate from react, implementing prop drilling, and dynamically displaying the number of list items in a react application.', 'duration': 240.463, 'highlights': ["The chapter demonstrates importing useState from React to fix the 'useState is not defined' error in app.js.", 'The process of implementing prop drilling and de-structuring props in the Content.js file is explained.', 'The method for dynamically displaying the number of list items in the footer component based on the length of the array in state is detailed.']}, {'end': 6856.446, 'start': 6502.455, 'title': 'Refactoring content.js with abstraction', 'summary': 'Discusses refactoring the content.js file by creating a reusable itemlist component through abstraction, thus reducing clutter and improving maintainability. it also emphasizes using es7 react snippets for efficient component creation.', 'duration': 353.991, 'highlights': ['Creating a reusable ItemList component through abstraction to declutter the Content.js file and improve maintainability. The chapter focuses on creating a reusable ItemList component through abstraction, aiming to declutter the Content.js file and improve its maintainability.', 'Emphasizing the use of ES7 React snippets for efficient component creation. The transcript highlights the use of ES7 React snippets for efficient component creation, showcasing the importance of leveraging tools for improved development workflow.']}, {'end': 7479.123, 'start': 6856.886, 'title': 'Creating a reusable line item component', 'summary': 'Covers creating a reusable line item component for every line item, drilling down the component tree, addressing errors, and organizing dependencies, with a focus on controlled inputs in react forms.', 'duration': 622.237, 'highlights': ['Creating a reusable line item component The chapter extensively discusses creating a reusable line item component to be used for every line item, emphasizing the organization and specificity of the components.', 'Drilling down the component tree The process of drilling down the component tree from the app component to the content component and then to the item list component is explained, highlighting the hierarchical structure of the components.', 'Addressing errors and organizing dependencies The chapter addresses errors such as unique key prop requirement and organizes dependencies by moving React icons to production dependency, ensuring a streamlined development process.', 'Focus on controlled inputs in React forms The chapter focuses on controlled components, providing clarity on their handling in React forms and emphasizing the use of one source of truth for the state.']}], 'duration': 1960.585, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go5518538.jpg', 'highlights': ['The chapter demonstrates handling state updates and local storage management to delete items from a shopping list.', 'Creating a reusable ItemList component through abstraction to declutter the Content.js file and improve maintainability.', 'The tutorial introduces React props and prop drilling, which allows the passing of data from parent components to child components.', 'The tutorial covers creating three components: header, content, and footer.', 'The chapter addresses errors such as unique key prop requirement and organizes dependencies by moving React icons to production dependency.']}, {'end': 9579.141, 'segs': [{'end': 7589.453, 'src': 'embed', 'start': 7558.573, 'weight': 0, 'content': [{'end': 7563.235, 'text': 'And remember all of JSX is a JavaScript or is JavaScript.', 'start': 7558.573, 'duration': 4.662}, {'end': 7568.158, 'text': "So here we'll set for to add item.", 'start': 7563.856, 'duration': 4.302}, {'end': 7573.871, 'text': "And after that, we're going to go ahead and add the label here, and we'll also say Add Item.", 'start': 7569.21, 'duration': 4.661}, {'end': 7580.232, 'text': "We'll probably hide this label off the screen, but screen readers would still be able to read it,", 'start': 7574.251, 'duration': 5.981}, {'end': 7583.592, 'text': 'and you always want to have a label for every input on your form.', 'start': 7580.232, 'duration': 3.36}, {'end': 7589.453, 'text': "Now for the input, I'm going to put each attribute on a separate line, and we'll start with Auto Focus.", 'start': 7584.233, 'duration': 5.22}], 'summary': 'Using jsx to set up form with auto focus attribute.', 'duration': 30.88, 'max_score': 7558.573, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go7558573.jpg'}, {'end': 8111.492, 'src': 'embed', 'start': 8064.963, 'weight': 2, 'content': [{'end': 8073.913, 'text': "but we'll start typing here and we have, let's say, S-T-A-T-E and it catches up just a little bit behind my typing,", 'start': 8064.963, 'duration': 8.95}, {'end': 8076.616, 'text': 'but there is new item state right there.', 'start': 8073.913, 'duration': 2.703}, {'end': 8080.46, 'text': "Or we could say we're shopping for pizza.", 'start': 8077.437, 'duration': 3.023}, {'end': 8088.324, 'text': "and now there is our new state right there in the DevTools, and I'm using React DevTools to show the components.", 'start': 8081.321, 'duration': 7.003}, {'end': 8090.344, 'text': "Again, I'll link in the description for those.", 'start': 8088.544, 'duration': 1.8}, {'end': 8093.385, 'text': 'But we see the state update automatically.', 'start': 8091.124, 'duration': 2.261}, {'end': 8102.368, 'text': "Now, does this update our list? No, we still need to handle the submit, but we are handling or we're linking to one source of truth for this input.", 'start': 8093.445, 'duration': 8.923}, {'end': 8104.569, 'text': 'It is now a controlled input.', 'start': 8102.508, 'duration': 2.061}, {'end': 8109.911, 'text': "I'm going to get out of React DevTools and come back to the elements in DevTools for just a moment.", 'start': 8104.589, 'duration': 5.322}, {'end': 8111.492, 'text': 'So you can see these elements here.', 'start': 8109.931, 'duration': 1.561}], 'summary': 'Using react devtools to show components and update state automatically.', 'duration': 46.529, 'max_score': 8064.963, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go8064963.jpg'}, {'end': 8213.357, 'src': 'embed', 'start': 8181.789, 'weight': 3, 'content': [{'end': 8189.174, 'text': 'The event is implicitly passed without you explicitly Showing that it is.', 'start': 8181.789, 'duration': 7.385}, {'end': 8196.096, 'text': 'so handle submit here will still receive the event and we can work with it as we define the function.', 'start': 8189.174, 'duration': 6.922}, {'end': 8197.416, 'text': "So I'm going to save this,", 'start': 8196.096, 'duration': 1.32}, {'end': 8209.94, 'text': "since we've passed handle submit into the on submit listener here for the form and now we'll go back to app.js and We can define this function right now.", 'start': 8197.416, 'duration': 12.524}, {'end': 8213.357, 'text': 'It has a console log submitted.', 'start': 8211.235, 'duration': 2.122}], 'summary': 'Event implicitly passed, handle submit receives event, define function in app.js with console log submitted.', 'duration': 31.568, 'max_score': 8181.789, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go8181789.jpg'}, {'end': 8262.562, 'src': 'embed', 'start': 8234.933, 'weight': 5, 'content': [{'end': 8245.24, 'text': "default and call that first in the handle submit function and then we should be able to see the submitted and it won't reload the page.", 'start': 8234.933, 'duration': 10.307}, {'end': 8250.823, 'text': 'so now, if i type pizza, we get submitted in the console.', 'start': 8245.24, 'duration': 5.583}, {'end': 8253.625, 'text': 'pizza is still here because the page did not reload.', 'start': 8250.823, 'duration': 2.802}, {'end': 8262.562, 'text': 'Because we use the required attribute in the input, we really should not get a blank value submitted,', 'start': 8254.739, 'duration': 7.823}], 'summary': 'Using the required attribute prevents blank value submissions.', 'duration': 27.629, 'max_score': 8234.933, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go8234933.jpg'}, {'end': 8383.906, 'src': 'embed', 'start': 8334.728, 'weight': 6, 'content': [{'end': 8338.611, 'text': 'And this long line here is kind of making pizza wrap, but we do see it.', 'start': 8334.728, 'duration': 3.883}, {'end': 8346.415, 'text': "Now let's go ahead and remove that console statement, but we need to define the add item function so we can call it in our handle submit.", 'start': 8338.87, 'duration': 7.545}, {'end': 8353.4, 'text': "We'll scroll up above the handle check and handle delete and we will add item right here.", 'start': 8346.856, 'duration': 6.544}, {'end': 8360.865, 'text': 'so const add item and this is going to receive an item, of course, whatever the new item is,', 'start': 8353.4, 'duration': 7.465}, {'end': 8366.403, 'text': "And inside here we need to think about how we're constructing this item.", 'start': 8362.662, 'duration': 3.741}, {'end': 8372.544, 'text': 'And we can see items have an ID, and then they have a check value, and then the item itself.', 'start': 8366.702, 'duration': 5.842}, {'end': 8375.484, 'text': 'So ID is the first thing to concern ourselves with.', 'start': 8372.984, 'duration': 2.5}, {'end': 8382.406, 'text': "And how do we increment the item ID? Well, let's go ahead and write a little code that does that.", 'start': 8375.603, 'duration': 6.803}, {'end': 8383.906, 'text': "We'll define the ID here.", 'start': 8382.626, 'duration': 1.28}], 'summary': 'Adding functionality to define and increment item ids in the code.', 'duration': 49.178, 'max_score': 8334.728, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go8334727.jpg'}, {'end': 8571.986, 'src': 'embed', 'start': 8538.977, 'weight': 9, 'content': [{'end': 8554.562, 'text': "I'm going to copy those and just above we'll create a function and we'll call this Set and save items, and then we're going to pass in the new items.", 'start': 8538.977, 'duration': 15.585}, {'end': 8560.963, 'text': "And now let's just put Those two lines right there, but here instead of list items.", 'start': 8554.562, 'duration': 6.401}, {'end': 8571.986, 'text': "We'll just have new items And we'll change the same thing here and then in the rest of these we can, instead of saying set items,", 'start': 8561.223, 'duration': 10.763}], 'summary': 'Creating a function to set and save items, replacing list items with new items.', 'duration': 33.009, 'max_score': 8538.977, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go8538977.jpg'}, {'end': 8692.95, 'src': 'embed', 'start': 8664.519, 'weight': 8, 'content': [{'end': 8672.004, 'text': 'Now, if we scroll up, we can see when we save, we use JSON Stringify with local storage to set that item.', 'start': 8664.519, 'duration': 7.485}, {'end': 8676.087, 'text': 'We need to go ahead and remove this default state now.', 'start': 8672.464, 'duration': 3.623}, {'end': 8680.908, 'text': 'And we want to pull the values out of the local storage that we have saved.', 'start': 8676.767, 'duration': 4.141}, {'end': 8685.509, 'text': "So let's start out with JSON.parse.", 'start': 8681.328, 'duration': 4.181}, {'end': 8692.95, 'text': "And then we'll have local storage.getItem.", 'start': 8687.249, 'duration': 5.701}], 'summary': 'Using json parse and local storage.getitem to retrieve saved values.', 'duration': 28.431, 'max_score': 8664.519, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go8664519.jpg'}, {'end': 8820.695, 'src': 'embed', 'start': 8794.063, 'weight': 10, 'content': [{'end': 8806.547, 'text': "I'm going to press Ctrl B once again to show the file tree over here and we're going to add another new component and we'll call this searchItem.js.", 'start': 8794.063, 'duration': 12.484}, {'end': 8817.833, 'text': 'Okay, our searchItem component is also a functional component, so we can press Control-Alt and the letter R and then type underscore R-A-F-C-E,', 'start': 8807.188, 'duration': 10.645}, {'end': 8820.695, 'text': 'and that gives us the outline of our functional component.', 'start': 8817.833, 'duration': 2.862}], 'summary': 'Adding a new functional component, searchitem.js, using keyboard shortcuts.', 'duration': 26.632, 'max_score': 8794.063, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go8794063.jpg'}, {'end': 8880.196, 'src': 'embed', 'start': 8848.816, 'weight': 4, 'content': [{'end': 8851.939, 'text': "So here we'll pass in the event and we'll say e.prevent.", 'start': 8848.816, 'duration': 3.123}, {'end': 8861.641, 'text': "default and that way, when somebody presses enter, we won't even have a button for this form.", 'start': 8855.316, 'duration': 6.325}, {'end': 8864.964, 'text': "but when somebody presses enter, it won't reload the page.", 'start': 8861.641, 'duration': 3.323}, {'end': 8866.765, 'text': 'so there is our prevent default.', 'start': 8864.964, 'duration': 1.801}, {'end': 8875.652, 'text': "with the on submit from here we can add a label and inside the label we'll have another html4 and we'll set that equal to.", 'start': 8866.765, 'duration': 8.887}, {'end': 8880.196, 'text': "let's just call it search and then on the label we'll say search,", 'start': 8875.652, 'duration': 4.544}], 'summary': 'Using preventdefault to avoid page reload on form submission', 'duration': 31.38, 'max_score': 8848.816, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go8848816.jpg'}, {'end': 9073.64, 'src': 'embed', 'start': 9044.325, 'weight': 13, 'content': [{'end': 9047.748, 'text': 'input spans the entire application.', 'start': 9044.325, 'duration': 3.423}, {'end': 9053.491, 'text': "here we don't need a button because we're just going to be able to type and we have linked that together.", 'start': 9047.748, 'duration': 5.743}, {'end': 9062.615, 'text': "and if we look back in the search component, we still need to link it to our state that we have set and we'll need to destructure that as well.", 'start': 9053.491, 'duration': 9.124}, {'end': 9073.64, 'text': "so let's receive the search and the set search with the destructuring at the top of the component and then inside of the input.", 'start': 9062.615, 'duration': 11.025}], 'summary': 'Application input spans without button, linked for typing, and requires state linking and destructuring in search component.', 'duration': 29.315, 'max_score': 9044.325, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go9044325.jpg'}, {'end': 9151.535, 'src': 'embed', 'start': 9121.916, 'weight': 12, 'content': [{'end': 9123.818, 'text': "Other than that, I didn't make another change there.", 'start': 9121.916, 'duration': 1.902}, {'end': 9136.469, 'text': 'But now being tied to the state, When we search, we can once again look at the components in the DevTools And I will scroll up just a little bit.', 'start': 9124.218, 'duration': 12.251}, {'end': 9144.172, 'text': "We'll pick Components out of our React DevTools, pick Search Item, and there we can see our search state.", 'start': 9136.489, 'duration': 7.683}, {'end': 9151.535, 'text': 'So when we type in P-I-Z, we will see that represented in the state below.', 'start': 9144.732, 'duration': 6.803}], 'summary': 'Using devtools to search in react components and view state changes.', 'duration': 29.619, 'max_score': 9121.916, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go9121916.jpg'}, {'end': 9199.218, 'src': 'embed', 'start': 9173.584, 'weight': 15, 'content': [{'end': 9177.986, 'text': 'And that will essentially apply what we type into our search box.', 'start': 9173.584, 'duration': 4.402}, {'end': 9179.826, 'text': 'And it will filter the items to that.', 'start': 9178.126, 'duration': 1.7}, {'end': 9183.027, 'text': "So let's do this with the higher order function filter.", 'start': 9179.986, 'duration': 3.041}, {'end': 9189.15, 'text': 'So instead of just passing in the items, we want to pass in items.filter.', 'start': 9183.067, 'duration': 6.083}, {'end': 9192.172, 'text': "And from there, we're going to have an item.", 'start': 9189.87, 'duration': 2.302}, {'end': 9199.218, 'text': "And now inside the filter, let's put two of the parentheses.", 'start': 9192.192, 'duration': 7.026}], 'summary': 'Filter items by applying higher order function to search box input.', 'duration': 25.634, 'max_score': 9173.584, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go9173584.jpg'}, {'end': 9383.062, 'src': 'embed', 'start': 9305.598, 'weight': 1, 'content': [{'end': 9313.982, 'text': "So just a quick recap on what we've done for our two controlled components today, add item has the value equal to the state.", 'start': 9305.598, 'duration': 8.384}, {'end': 9319.323, 'text': 'And then on change, we set the state with e.target.value.', 'start': 9314.502, 'duration': 4.821}, {'end': 9322.324, 'text': "And then it's very much the same with search item.", 'start': 9319.743, 'duration': 2.581}, {'end': 9324.924, 'text': 'We set the value equal to the state.', 'start': 9322.824, 'duration': 2.1}, {'end': 9330.606, 'text': 'And then on change, we once again set the new state to e.target.value.', 'start': 9325.064, 'duration': 5.542}, {'end': 9335.687, 'text': 'And that gives one source of truth for the input, and that is the state.', 'start': 9330.926, 'duration': 4.761}, {'end': 9339.048, 'text': "And that's how you want to handle inputs in a form in React.", 'start': 9335.807, 'duration': 3.241}, {'end': 9345.971, 'text': "Let's go back to the additem.js, and there's one final addition I would like to make before we finish.", 'start': 9339.508, 'duration': 6.463}, {'end': 9352.394, 'text': "Let's notice if we add something new here, and let's just say we're going to buy sushi at the grocery store.", 'start': 9346.491, 'duration': 5.903}, {'end': 9355.076, 'text': 'But instead of pressing Enter, I click the button.', 'start': 9352.715, 'duration': 2.361}, {'end': 9362.497, 'text': 'Now notice the button still has focus because I have hover and focus style to change it to green.', 'start': 9355.876, 'duration': 6.621}, {'end': 9365.978, 'text': 'I click the button, the button retained the focus.', 'start': 9362.577, 'duration': 3.401}, {'end': 9367.519, 'text': "I'm not ready to type.", 'start': 9366.178, 'duration': 1.341}, {'end': 9370.719, 'text': "If I type an A or a B, I'm not seeing anything here.", 'start': 9367.639, 'duration': 3.08}, {'end': 9375.12, 'text': 'And so we need to shift the focus back to the input.', 'start': 9371.359, 'duration': 3.761}, {'end': 9377.781, 'text': 'And we can do that with a hook in React.', 'start': 9375.68, 'duration': 2.101}, {'end': 9380.341, 'text': 'And that hook is called useRef.', 'start': 9378.201, 'duration': 2.14}, {'end': 9383.062, 'text': "So let's go ahead and import that hook.", 'start': 9380.801, 'duration': 2.261}], 'summary': 'Using controlled components in react to manage input state and focus.', 'duration': 77.464, 'max_score': 9305.598, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go9305598.jpg'}], 'start': 7479.623, 'title': 'Form creation and state management in react', 'summary': 'Explains creating a form for new items, controlled input and state management, handling form submission, constructing item id, managing local storage, and implementing functional components for search and filtering in a react application.', 'chapters': [{'end': 7824.517, 'start': 7479.623, 'title': 'Adding form for new items', 'summary': 'Explains the process of adding a form for new items using react, including creating a new component, adding form elements, and importing and styling the component, with a focus on accessibility and usability.', 'duration': 344.894, 'highlights': ['The process of adding a form for new items using React involves creating a new component called add item, adding form elements including label, input, and button with specific attributes such as autofocus, id, type, placeholder, and ARIA label. The transcript details the step-by-step process of creating a new component called add item, adding form elements with specific attributes such as autofocus, id, type, placeholder, and ARIA label, to ensure the usability and accessibility of the form.', 'The importance of accessibility is highlighted, with emphasis on using ARIA label for the button and positioning the label off-screen for screen readers, along with styling the form and its elements for usability and visual appeal. The transcript emphasizes the importance of accessibility by using ARIA label for the button and positioning the label off-screen for screen readers, along with styling the form and its elements for usability and visual appeal.', 'The chapter also discusses the import and integration of the newly created component into the main app, with a focus on ensuring the proper display and functionality of the form. The chapter discusses the import and integration of the newly created component into the main app, with a focus on ensuring the proper display and functionality of the form.']}, {'end': 8155.59, 'start': 7824.998, 'title': 'Controlled input and state management', 'summary': 'Demonstrates the process of creating a controlled input tied to state in react, preventing default form submission behavior, and using devtools to monitor state changes.', 'duration': 330.592, 'highlights': ['Creating a controlled input tied to state The process of tying the input to state, ensuring a single source of truth, and handling state changes is demonstrated, enabling real-time representation of the input state.', 'Preventing default form submission behavior The need to prevent the default behavior of form submission, which triggers page reload, is emphasized, and the method to achieve this is discussed.', "Using DevTools to monitor state changes Utilizing React DevTools to visualize and monitor state changes, enabling real-time observation of the controlled input's state, is showcased."]}, {'end': 8360.865, 'start': 8155.59, 'title': 'Handling form submission in javascript', 'summary': 'Explains how to handle form submission in javascript, using event handling and preventing page reload, while also ensuring the form submission does not occur with blank values.', 'duration': 205.275, 'highlights': ['The event is implicitly passed without you explicitly showing that it is. The event is implicitly passed to the handle submit function, allowing it to receive the event and work with it as defined.', 'Preventing page reload by using event.preventDefault() in the handle submit function. By using event.preventDefault(), the page reload is prevented upon form submission, allowing the submitted content to be displayed without refreshing the page.', 'Checking for blank values in the form submission and exiting the function if the value is undefined or false. The function checks for blank values in the form submission and exits the function if the value is undefined or false, preventing the submission of empty values.', 'Defining the add item function to handle the new item being submitted. The add item function is defined to handle the new item being submitted, ensuring that it is processed and added to the application effectively.']}, {'end': 8793.522, 'start': 8362.662, 'title': 'Constructing item id and managing local storage', 'summary': 'Discusses how to construct an item id, manage local storage to save and retrieve items, and simplify code by creating a function to handle common operations, enabling the addition, deletion, and persistence of items in a grocery list.', 'duration': 430.86, 'highlights': ['The chapter explains how to construct an item ID by incrementing the ID based on the length of the list, ensuring that the new ID is unique and properly defined for each new item added to the list. Incrementing the ID by 1 when adding a new item.', 'The transcript details the process of saving and retrieving items from local storage, ensuring that the list of items persists even after reloading the page. Using JSON Stringify and JSON.parse to save and retrieve items from local storage.', "The chapter demonstrates the creation of a function to handle common operations, reducing code repetition and making it easier to manage adding, deleting, and persisting items in the grocery list. Creating a function 'Set and save items' to handle common operations and simplify code."]}, {'end': 9098.267, 'start': 8794.063, 'title': 'React functional component', 'summary': 'Covers creating a search component in react, including setting up a functional component, handling form submission, and styling the search input, while emphasizing the use of state and passing props to the component.', 'duration': 304.204, 'highlights': ['Setting up a functional component for the searchItem in React using Control-Alt-R-A-F-C-E shortcut to generate the outline of the functional component. Creation of the searchItem functional component using a keyboard shortcut.', 'Handling form submission by preventing default behavior with onSubmit listener to avoid page reload upon pressing enter in the search form. Preventing default behavior on form submission to avoid page reload.', 'Emphasizing the use of state by setting up search and setSearch as empty strings and passing them to the new searchItem component, along with importing the component and adding it to JSX. Utilizing state and passing props to the searchItem component.', 'Styling the search input by adding CSS styles at the bottom of the index.css file to ensure the input spans the entire application. Applying CSS styles to the search input to span the entire application.']}, {'end': 9579.141, 'start': 9099.4, 'title': 'React form input and filtering', 'summary': 'Covers implementing form input handling in a react application, including controlled components for add item and search item, using state to filter items, applying lowercase matching for search, and setting focus on input using useref hook, with plans for future development involving interacting with data from a server.', 'duration': 479.741, 'highlights': ['The chapter covers implementing form input handling in a React application, including controlled components for add item and search item, using state to filter items, applying lowercase matching for search, and setting focus on input using useRef hook, with plans for future development involving interacting with data from a server.', 'The code demonstrates how to implement controlled components for add item and search item, ensuring the input values are tied to the state and updating the state on change, providing a single source of truth for the input (state).', "The process of filtering items based on the search input is explained, utilizing the filter higher-order function and applying lowercase matching to ensure case-insensitive search, with practical examples of filtering items based on user input such as 'P-I-Z', 'B', 'BA', 'Z', 'R-E-A-D', etc.", 'The useRef hook is introduced and utilized to set focus back to the input after a button click event, ensuring a seamless user experience when adding new items to the list, demonstrating practical implementation and the importance of user interaction in React applications.', 'The chapter also hints at future development plans involving interacting with data from a server or backend, indicating the progression towards more advanced concepts and functionalities in the React application development.']}], 'duration': 2099.518, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go7479623.jpg', 'highlights': ['Creating a form for new items using React involves adding form elements with specific attributes such as autofocus, id, type, placeholder, and ARIA label.', 'Tying the input to state, ensuring a single source of truth, and handling state changes enables real-time representation of the input state.', "Utilizing React DevTools to visualize and monitor state changes enables real-time observation of the controlled input's state.", 'The event is implicitly passed to the handle submit function, allowing it to receive the event and work with it as defined.', 'Using event.preventDefault() prevents page reload upon form submission, allowing the submitted content to be displayed without refreshing the page.', 'The function checks for blank values in the form submission and exits the function if the value is undefined or false, preventing the submission of empty values.', 'The add item function is defined to handle the new item being submitted, ensuring that it is processed and added to the application effectively.', 'Constructing an item ID by incrementing the ID based on the length of the list ensures that the new ID is unique for each new item added.', 'Saving and retrieving items from local storage using JSON Stringify and JSON.parse ensures that the list of items persists even after reloading the page.', "Creating a function 'Set and save items' to handle common operations and simplify code.", 'Setting up a functional component for the searchItem in React using a keyboard shortcut.', 'Preventing default behavior on form submission to avoid page reload.', 'Utilizing state and passing props to the searchItem component.', 'Applying CSS styles to the search input to span the entire application.', 'Implementing controlled components for add item and search item, ensuring the input values are tied to the state and updating the state on change.', 'Filtering items based on the search input using the filter higher-order function and applying lowercase matching to ensure case-insensitive search.', 'Utilizing the useRef hook to set focus back to the input after a button click event, ensuring a seamless user experience when adding new items to the list.', 'Hinting at future development plans involving interacting with data from a server or backend, indicating the progression towards more advanced concepts and functionalities in the React application development.']}, {'end': 11018.827, 'segs': [{'end': 9901.809, 'src': 'embed', 'start': 9874.346, 'weight': 1, 'content': [{'end': 9878.211, 'text': 'We can save those and now we need to put those in our JSX.', 'start': 9874.346, 'duration': 3.865}, {'end': 9881.074, 'text': "So we'll have a square and close that out.", 'start': 9878.251, 'duration': 2.823}, {'end': 9883.697, 'text': 'I have an input with a capital I.', 'start': 9881.094, 'duration': 2.603}, {'end': 9885.839, 'text': 'and close that out.', 'start': 9884.918, 'duration': 0.921}, {'end': 9890.502, 'text': 'And now if we save our JSX, we can see our square and our input.', 'start': 9886.379, 'duration': 4.123}, {'end': 9895.745, 'text': "Now let's go back to our square component, and we can pass in a prop.", 'start': 9891.022, 'duration': 4.723}, {'end': 9901.809, 'text': "We haven't passed it in from above yet from the parent, but we'll just put it here, color value, and that's destructured.", 'start': 9896.005, 'duration': 5.804}], 'summary': 'Creating jsx with square and input components, passing color value prop.', 'duration': 27.463, 'max_score': 9874.346, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go9874346.jpg'}, {'end': 10024.51, 'src': 'embed', 'start': 9997.365, 'weight': 3, 'content': [{'end': 10003.869, 'text': "okay, after that we've closed the section and we're not passing in a color value yet.", 'start': 9997.365, 'duration': 6.504}, {'end': 10013.935, 'text': "so let's go ahead and give a default prop down here, and this will be square dot default props equals.", 'start': 10003.869, 'duration': 10.066}, {'end': 10021.067, 'text': 'now we can have color value here and we can just say empty color value.', 'start': 10013.935, 'duration': 7.132}, {'end': 10024.51, 'text': 'So that will be different than the empty value, just so we know when we see it.', 'start': 10021.107, 'duration': 3.403}], 'summary': 'Adding default prop for color value in section closed', 'duration': 27.145, 'max_score': 9997.365, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go9997365.jpg'}, {'end': 10403.295, 'src': 'embed', 'start': 10375.375, 'weight': 0, 'content': [{'end': 10380.978, 'text': 'And then the input type text that we select just specifying what type of input it is here in the CSS.', 'start': 10375.375, 'duration': 5.603}, {'end': 10382.678, 'text': 'And there is the app.', 'start': 10381.518, 'duration': 1.16}, {'end': 10387.241, 'text': 'So if we type in Dodger blue, it sure works.', 'start': 10382.738, 'duration': 4.503}, {'end': 10391.703, 'text': 'Steel blue should work for any of them.', 'start': 10388.401, 'duration': 3.302}, {'end': 10396.333, 'text': 'Alice blue, old Lace.', 'start': 10392.023, 'duration': 4.31}, {'end': 10397.353, 'text': 'All good.', 'start': 10396.893, 'duration': 0.46}, {'end': 10403.295, 'text': 'Now. I hope you were able to do this and came up with something similar to what I did,', 'start': 10397.854, 'duration': 5.441}], 'summary': 'Css input type text accepts various color names like dodger blue, steel blue, alice blue, and old lace.', 'duration': 27.92, 'max_score': 10375.375, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go10375375.jpg'}], 'start': 9579.502, 'title': 'React app development', 'summary': 'Covers creating a new react project, developing functional components, managing states, and adding styles to create a square component with user input functionality and visual styling. it also demonstrates the use of state and controlled inputs, passing props, setting up hex values, and adding a toggle button to switch between dark and light text colors.', 'chapters': [{'end': 9720.978, 'start': 9579.502, 'title': 'Creating react app for color changer tutorial', 'summary': 'Demonstrates the process of creating a new react project using create react app, removing unnecessary files, and making adjustments to the index.js and app.js files to set up the project for the color changer tutorial.', 'duration': 141.476, 'highlights': ["The process of creating a new React project using Create React App The speaker uses the naming convention '10 Tut' for the project and demonstrates the command 'npx create-react-app' to initiate the project creation.", 'Removing unnecessary files and making adjustments to index.js and app.js The speaker removes multiple files including app.css, app.test.js, logo.svg, report web vitals, and setup test, and makes adjustments to index.js and app.js by removing imports and comments.', "Adding content to app.js The speaker adds an 'h1' element with the text 'Hello' to the app.js file."]}, {'end': 10374.834, 'start': 9720.978, 'title': 'React app development', 'summary': 'Covers the development of a react app, including the creation of functional components, passing props, managing states, and adding styles to create a square component with user input functionality and visual styling.', 'duration': 653.856, 'highlights': ["Functional components 'square' and 'input' are created using React snippets, with 'square' having a section element and 'input' having a form element, and both components are imported and used in the app.js file.", "The color value state is managed using useState hook, passed as a prop to the 'square' and 'input' components, and controlled input functionality is added to the 'input' component to update the color value state.", 'CSS styles are added to create visual styling for the square component, including setting the square dimensions, border, box shadow, and aligning the content within the square.']}, {'end': 10704.111, 'start': 10375.375, 'title': 'React controlled inputs and state', 'summary': 'Demonstrates the use of state and controlled inputs in react, passing props down to components, setting up hex values, and importing color names to translate color names into hex values.', 'duration': 328.736, 'highlights': ['The chapter demonstrates the use of state and controlled inputs in React. The speaker explains how to use state and controlled inputs in React, allowing for more control and manipulation of the input values.', 'Passing props down to components and setting up hex values. The tutorial covers passing props down to components and setting up hex values, enhancing the functionality of the application.', 'Importing color names to translate color names into hex values. The tutorial discusses importing color names to translate color names into hex values, providing a more dynamic and robust color input functionality.']}, {'end': 11018.827, 'start': 10704.111, 'title': 'Toggle text color button', 'summary': 'Demonstrates the process of adding a toggle button to switch between dark and light text colors in a web application, utilizing boolean values and conditional rendering, resulting in improved text visibility and user interaction.', 'duration': 314.716, 'highlights': ['The process of adding a toggle button to switch between dark and light text colors in a web application is demonstrated. The chapter discusses the implementation of a toggle button to switch between dark and light text colors, enhancing text visibility and user interaction.', 'Utilizing boolean values and conditional rendering, the chapter showcases the mechanism for changing text colors based on the boolean value, resulting in improved text visibility. The chapter explains the use of boolean values and conditional rendering to dynamically change text colors based on the boolean value, resulting in improved text visibility and user interaction.', 'The addition of a toggle button leads to improved user interaction and text visibility in the web application. The chapter illustrates how the toggle button enhances user interaction and improves text visibility within the web application.']}], 'duration': 1439.325, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go9579502.jpg', 'highlights': ["The process of creating a new React project using Create React App with the command 'npx create-react-app' is demonstrated.", "Functional components 'square' and 'input' are created using React snippets, with 'square' having a section element and 'input' having a form element.", 'The chapter demonstrates the use of state and controlled inputs in React, allowing for more control and manipulation of the input values.', 'The process of adding a toggle button to switch between dark and light text colors in a web application is demonstrated.']}, {'end': 11857.414, 'segs': [{'end': 11096.582, 'src': 'embed', 'start': 11060.594, 'weight': 2, 'content': [{'end': 11063.675, 'text': 'Now you could also make those selections up here in the menu.', 'start': 11060.594, 'duration': 3.081}, {'end': 11067.176, 'text': "So if you're not sure of the key shortcuts, please do that.", 'start': 11063.715, 'duration': 3.461}, {'end': 11075.867, 'text': "With that said now, let's import useEffect right after useState, and that's from React.", 'start': 11067.836, 'duration': 8.031}, {'end': 11079.311, 'text': 'And after our import statement, we can begin to work with it.', 'start': 11076.467, 'duration': 2.844}, {'end': 11084.857, 'text': "And one of the things we'll do is discuss about when useEffect runs.", 'start': 11080.031, 'duration': 4.826}, {'end': 11096.582, 'text': 'So if I have useEffect and I just type out the simplest version of it, and it takes an anonymous function, This runs at every render.', 'start': 11085.358, 'duration': 11.224}], 'summary': 'The transcript discusses importing and using useeffect in react to run at every render.', 'duration': 35.988, 'max_score': 11060.594, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go11060594.jpg'}, {'end': 11600.135, 'src': 'embed', 'start': 11569.09, 'weight': 0, 'content': [{'end': 11575.993, 'text': "This needs to be items because it will be the current state that we'll be saving to local storage now.", 'start': 11569.09, 'duration': 6.903}, {'end': 11578.995, 'text': 'Anytime items changes, we will do that.', 'start': 11576.113, 'duration': 2.882}, {'end': 11584.517, 'text': "With that, we've taken out half of our set and save items.", 'start': 11579.715, 'duration': 4.802}, {'end': 11586.418, 'text': 'Now we just need the set items.', 'start': 11584.557, 'duration': 1.861}, {'end': 11600.135, 'text': "I'll copy that and now select all these calls to set and save items and I'll just change them to set items and we can completely remove this set and save items function.", 'start': 11588.516, 'duration': 11.619}], 'summary': 'Half of the set and save items functions are removed, saving the current state to local storage.', 'duration': 31.045, 'max_score': 11569.09, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go11569090.jpg'}, {'end': 11781.916, 'src': 'embed', 'start': 11702.161, 'weight': 1, 'content': [{'end': 11708.284, 'text': "And then we'll come back and use useEffect to load data instead of saving to local storage.", 'start': 11702.161, 'duration': 6.123}, {'end': 11712.425, 'text': "Today we're looking at JSON Server.", 'start': 11709.963, 'duration': 2.462}, {'end': 11719.53, 'text': 'It will allow you to quickly launch a development API that you can work with as you build your front-end applications.', 'start': 11712.725, 'duration': 6.805}, {'end': 11727.476, 'text': "I'm at npmjs.com, and here we can search for JSON-server.", 'start': 11720.011, 'duration': 7.465}, {'end': 11730.999, 'text': "I'll press Enter, and you see it as the first result.", 'start': 11727.496, 'duration': 3.503}, {'end': 11734.982, 'text': 'And when I click that, we get the documentation for JSON Server.', 'start': 11731.659, 'duration': 3.323}, {'end': 11736.823, 'text': 'but one thing i want to point out.', 'start': 11735.302, 'duration': 1.521}, {'end': 11741.125, 'text': 'it says to install, use npm i json server.', 'start': 11736.823, 'duration': 4.302}, {'end': 11743.026, 'text': "we're not going to do that.", 'start': 11741.125, 'duration': 1.901}, {'end': 11750.249, 'text': "we're going to use npx, because we don't want to add json server as a dependency in our react application.", 'start': 11743.026, 'duration': 7.223}, {'end': 11755.271, 'text': 'we just want to launch it and work with it, and npx will allow us to do that.', 'start': 11750.249, 'duration': 5.022}, {'end': 11757.753, 'text': 'instead of installing with npm.', 'start': 11755.271, 'duration': 2.482}, {'end': 11760.394, 'text': "let's bring up visual studio code and get started.", 'start': 11757.753, 'duration': 2.641}, {'end': 11762.846, 'text': 'Here we go.', 'start': 11762.386, 'duration': 0.46}, {'end': 11769.31, 'text': "I have got our grocery list React application open that we've been working on throughout the series.", 'start': 11762.866, 'duration': 6.444}, {'end': 11771.611, 'text': "I'm on the app.js file.", 'start': 11769.85, 'duration': 1.761}, {'end': 11773.832, 'text': "But that doesn't matter so much right now.", 'start': 11772.091, 'duration': 1.741}, {'end': 11779.835, 'text': "In fact, I'm going to bring the source folder back up here so we don't see all the files.", 'start': 11773.892, 'duration': 5.943}, {'end': 11781.916, 'text': "I'm going to create a new folder.", 'start': 11779.995, 'duration': 1.921}], 'summary': 'Using npx instead of npm to launch json server for front-end development.', 'duration': 79.755, 'max_score': 11702.161, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go11702161.jpg'}], 'start': 11018.827, 'title': 'Using useeffect in react', 'summary': 'Covers the implementation and optimization of react hook useeffect, demonstrated with examples in visual studio code, including its behavior with different dependencies and its usage for local storage, ensuring efficient loading of data and seamless user experience. key points include devtools console demonstration, keyboard shortcuts, rendering order, and preparation for setting up a json server.', 'chapters': [{'end': 11060.093, 'start': 11018.827, 'title': 'React hook use effect', 'summary': 'Covers the implementation of react hook use effect, demonstrated in visual studio code with the grocery list app, alongside the use of devtools console, and keyboard shortcuts for code visibility.', 'duration': 41.266, 'highlights': ['The chapter covers the implementation of React Hook use effect, demonstrated in Visual Studio Code with the grocery list app.', 'The demonstration includes the use of DevTools console for debugging purposes.', 'Keyboard shortcuts for code visibility, such as Control-B for hiding the file tree and Alt-Z for wrapping long lines of code, are also discussed.']}, {'end': 11443.908, 'start': 11060.594, 'title': 'Understanding useeffect in react', 'summary': 'Covers the usage of useeffect in react, demonstrating its behavior with different dependencies, rendering order, and application implementation, including examples of when it runs at load time and in response to state changes.', 'duration': 383.314, 'highlights': ['useEffect runs at every render when no dependency is specified useEffect runs at every render when no dependency is specified, causing it to execute the anonymous function on every render, resulting in unnecessary executions and performance impact.', 'useEffect with an empty array as a dependency runs only at load time useEffect with an empty array as a dependency runs only at load time, ensuring that the anonymous function is executed only once when the component is initially rendered, optimizing performance.', 'useEffect monitors its dependencies and runs when they change useEffect monitors its dependencies and runs when they change, allowing for efficient re-execution of the anonymous function only when the specified dependencies undergo a change, preventing unnecessary executions.', 'useEffect execution order is asynchronous and not synchronous useEffect execution order is asynchronous and not synchronous, as demonstrated by the console log outputs, indicating that the code inside useEffect is executed after the rendering process, providing insights into its asynchronous behavior.', 'Implementing useEffect for data initialization from local storage Demonstrates the implementation of useEffect for data initialization from local storage, showcasing its practical application for setting the initial state of the application and initializing data from local storage, ensuring efficient application setup.']}, {'end': 11857.414, 'start': 11444.932, 'title': 'Using useeffect to optimize local storage in react', 'summary': 'Demonstrates the use of useeffect to optimize local storage in a react application, ensuring efficient loading of data and seamless user experience. key points include the implementation of a short circuit operator to handle null values, the use of useeffect to save and load local storage, and the preparation for setting up a json server for the backend. the tutorial also emphasizes the efficient use of npx for launching the json server without adding it as a dependency in the react application.', 'duration': 412.482, 'highlights': ['The use of a short circuit operator to handle null values and ensure the application has an empty array to work with, preventing errors and ensuring smooth functionality. By implementing a short circuit operator and utilizing an empty array, the application effectively handles null values, ensuring smooth functionality and preventing errors.', 'Demonstration of using useEffect to save and load local storage, improving efficiency by only loading data when necessary and ensuring a seamless user experience. The tutorial showcases the use of useEffect to save and load local storage, emphasizing the efficiency gained by only loading data when necessary, thus enhancing the user experience.', 'Preparation for setting up a JSON server to mock the backend for the data API, ensuring efficient development and integration for front-end applications. The chapter prepares for setting up a JSON server to mock the backend for the data API, highlighting its role in facilitating efficient development and seamless integration for front-end applications.', 'Emphasizing the use of npx for launching the JSON server without adding it as a dependency in the React application, allowing for easier management and flexibility in working with the server. The tutorial emphasizes the use of npx for launching the JSON server, highlighting its benefits in avoiding the addition of the server as a dependency in the React application, thereby offering easier management and greater flexibility.']}], 'duration': 838.587, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go11018827.jpg', 'highlights': ['Covers the implementation of React Hook use effect, demonstrated in Visual Studio Code with the grocery list app.', 'Demonstration includes the use of DevTools console for debugging purposes.', 'Keyboard shortcuts for code visibility, such as Control-B for hiding the file tree and Alt-Z for wrapping long lines of code, are also discussed.', 'useEffect with an empty array as a dependency runs only at load time, ensuring that the anonymous function is executed only once when the component is initially rendered, optimizing performance.', 'useEffect monitors its dependencies and runs when they change, allowing for efficient re-execution of the anonymous function only when the specified dependencies undergo a change, preventing unnecessary executions.', 'Demonstrates the implementation of useEffect for data initialization from local storage, showcasing its practical application for setting the initial state of the application and initializing data from local storage, ensuring efficient application setup.', 'Demonstration of using useEffect to save and load local storage, improving efficiency by only loading data when necessary and ensuring a seamless user experience.', 'Preparation for setting up a JSON server to mock the backend for the data API, ensuring efficient development and integration for front-end applications.', 'Emphasizing the use of npx for launching the JSON server without adding it as a dependency in the React application, allowing for easier management and flexibility in working with the server.', 'The use of a short circuit operator to handle null values and ensure the application has an empty array to work with, preventing errors and ensuring smooth functionality.']}, {'end': 13114.59, 'segs': [{'end': 12111.562, 'src': 'embed', 'start': 12046.179, 'weight': 0, 'content': [{'end': 12054.201, 'text': 'we would have the number one there and likewise, when we delete, we would also have the id because we would want to delete that now.', 'start': 12046.179, 'duration': 8.022}, {'end': 12059.483, 'text': 'those are different types of requests also, so you could have a get request, a post request.', 'start': 12054.201, 'duration': 5.282}, {'end': 12066.766, 'text': "When we update an item, we're actually going to send a patch request, and then a delete item is called a delete request.", 'start': 12059.863, 'duration': 6.903}, {'end': 12071.249, 'text': "Okay, we're going to take all of this and move forward in the project.", 'start': 12067.487, 'duration': 3.762}, {'end': 12080.814, 'text': "In the next tutorial we'll be working once again with use effect, but then also with async fetch requests to do these exact CRUD operations,", 'start': 12071.349, 'duration': 9.465}, {'end': 12083.315, 'text': 'that is create, read, update and delete.', 'start': 12080.814, 'duration': 2.501}, {'end': 12086.298, 'text': 'In the last tutorial,', 'start': 12085.157, 'duration': 1.141}, {'end': 12098.891, 'text': 'we learned about using JSON Server to run a local REST API as a development server where we could work with it and use that REST API as we develop our front end.', 'start': 12086.298, 'duration': 12.593}, {'end': 12101.474, 'text': "And that's what we're going to use today as well.", 'start': 12098.991, 'duration': 2.483}, {'end': 12104.757, 'text': "So you can see I've got Visual Studio Code here on the left.", 'start': 12101.914, 'duration': 2.843}, {'end': 12107.04, 'text': "And on the right, I've got Chrome open.", 'start': 12105.118, 'duration': 1.922}, {'end': 12111.562, 'text': "I've got the grocery list application we've been building in the top right.", 'start': 12107.64, 'duration': 3.922}], 'summary': 'Next tutorial: use effect and async fetch requests for crud operations', 'duration': 65.383, 'max_score': 12046.179, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go12046179.jpg'}, {'end': 12700.663, 'src': 'embed', 'start': 12671.345, 'weight': 1, 'content': [{'end': 12683.331, 'text': 'In fact, it actually produced an empty list or a null list, if you will and then we set this to empty, essentially null,', 'start': 12671.345, 'duration': 11.986}, {'end': 12687.434, 'text': "and then we couldn't use the filter on items like we have in JSX.", 'start': 12683.331, 'duration': 4.103}, {'end': 12692.638, 'text': "It's trying to call an operation on something that doesn't exist, and that is the error.", 'start': 12687.834, 'duration': 4.804}, {'end': 12696.22, 'text': 'So if we look back up here, get past all this error code.', 'start': 12693.038, 'duration': 3.182}, {'end': 12700.663, 'text': 'I can bring this up a little more way, back to where we were.', 'start': 12696.22, 'duration': 4.443}], 'summary': 'An error occurred due to an empty list, hindering filter usage.', 'duration': 29.318, 'max_score': 12671.345, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go12671345.jpg'}], 'start': 11857.734, 'title': 'Using json server and react', 'summary': 'Demonstrates using json server to create a mock rest api for a react application, covering different types of requests, running on port 3500. it also includes working with useeffect and async fetch requests for crud operations, optimizing data loading and handling fetch errors in react.', 'chapters': [{'end': 12066.766, 'start': 11857.734, 'title': 'Using json server for react', 'summary': 'Demonstrates how to use json server to create a mock rest api for a react application, including launching the server, making requests, and understanding different types of requests, such as get, post, patch, and delete, all running on port 3500.', 'duration': 209.032, 'highlights': ["The JSON server is launched using the command 'npx json-server -p 3500 -w data/db.json', running on port 3500 and providing resources at the items path with response codes and request times.", 'Requests to the server, including GET, POST, PATCH, and DELETE, are demonstrated, with detailed insights into the specific types of requests and their corresponding functionalities.', 'The process of making requests to the server, observing the log outputs, and understanding the different types of requests, such as GET, POST, PATCH, and DELETE, is showcased in the tutorial.']}, {'end': 12273.031, 'start': 12067.487, 'title': 'Working with useeffect and async fetch requests', 'summary': 'Covers using json server to run a local rest api, setting up the api url, and working with useeffect and async fetch requests for crud operations in a grocery list application, facilitated by visual studio code and chrome.', 'duration': 205.544, 'highlights': ['Setting up the API URL as a constant for fetch requests The chapter emphasizes the importance of setting the API URL as a constant, facilitating consistent usage throughout the fetch requests.', 'Using JSON Server to run a local REST API for development The chapter details the use of JSON Server to create a local REST API, enabling development and interaction with the front end of the grocery list application.', 'Working with useEffect and async fetch requests for CRUD operations The chapter discusses the use of useEffect and async fetch requests to perform CRUD operations in the grocery list application, demonstrating practical application and development.']}, {'end': 12583.13, 'start': 12273.552, 'title': 'Optimizing data loading with useeffect and usestate', 'summary': 'Discusses optimizing data loading in an application by using useeffect with an empty array as a dependency, and implementing an async function to fetch items from a rest api, in order to sync with the current state of the application.', 'duration': 309.578, 'highlights': ['Using useEffect with an empty array as a dependency to load data at load time only The chapter explains the usage of useEffect with an empty array as a dependency to ensure that data loading occurs only at load time, preventing unnecessary re-renders and improving performance.', "Implementing an async function to fetch items from a REST API The transcript outlines the implementation of an async function, fetchItems, to fetch items from a REST API, ensuring efficient data retrieval and synchronization with the application's state.", 'Utilizing async await instead of fetch inside useEffect The chapter emphasizes the use of async await instead of fetch inside useEffect, enabling improved handling of asynchronous operations and enhancing the readability of the code.']}, {'end': 13114.59, 'start': 12586.255, 'title': 'Handling fetch errors in react', 'summary': 'Demonstrates how to handle fetch errors in react by using useeffect, catching errors, logging error messages, and displaying error messages to the user, resulting in improved error handling and user experience.', 'duration': 528.335, 'highlights': ['The chapter demonstrates how to handle fetch errors in React The chapter focuses on handling fetch errors in React to improve error handling for better user experience.', 'Using useEffect to log list items to the console and set initial state The useEffect is utilized to log list items to the console and set the initial state for items, demonstrating the setup process.', 'Catching and logging fetch errors to improve error handling The process involves catching fetch errors and logging the error messages to improve error handling and provide better feedback to users.', 'Displaying error messages to the user in JSX The chapter also covers displaying error messages to the user in JSX, enhancing the user experience by providing meaningful feedback.']}], 'duration': 1256.856, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go11857734.jpg', 'highlights': ['Requests to the server, including GET, POST, PATCH, and DELETE, are demonstrated, with detailed insights into the specific types of requests and their corresponding functionalities.', "The JSON server is launched using the command 'npx json-server -p 3500 -w data/db.json', running on port 3500 and providing resources at the items path with response codes and request times.", 'Using JSON Server to run a local REST API for development The chapter details the use of JSON Server to create a local REST API, enabling development and interaction with the front end of the grocery list application.', 'Setting up the API URL as a constant for fetch requests The chapter emphasizes the importance of setting the API URL as a constant, facilitating consistent usage throughout the fetch requests.', 'Using useEffect with an empty array as a dependency to load data at load time only The chapter explains the usage of useEffect with an empty array as a dependency to ensure that data loading occurs only at load time, preventing unnecessary re-renders and improving performance.', "Implementing an async function to fetch items from a REST API The transcript outlines the implementation of an async function, fetchItems, to fetch items from a REST API, ensuring efficient data retrieval and synchronization with the application's state.", 'The chapter demonstrates how to handle fetch errors in React The chapter focuses on handling fetch errors in React to improve error handling for better user experience.']}, {'end': 14049.691, 'segs': [{'end': 13144.177, 'src': 'embed', 'start': 13115.971, 'weight': 2, 'content': [{'end': 13118.354, 'text': 'And now we can see our error displayed up here.', 'start': 13115.971, 'duration': 2.383}, {'end': 13122.167, 'text': 'Error did not Received expected data.', 'start': 13118.574, 'duration': 3.593}, {'end': 13123.387, 'text': "Oh, I've got a typo there.", 'start': 13122.247, 'duration': 1.14}, {'end': 13125.588, 'text': 'That is not correct.', 'start': 13124.788, 'duration': 0.8}, {'end': 13128.69, 'text': 'I just want to say did not receive expected data.', 'start': 13125.608, 'duration': 3.082}, {'end': 13129.63, 'text': "Let's save that.", 'start': 13128.71, 'duration': 0.92}, {'end': 13131.411, 'text': 'Now that looks correct.', 'start': 13130.29, 'duration': 1.121}, {'end': 13132.991, 'text': 'Did not receive expected data.', 'start': 13131.531, 'duration': 1.46}, {'end': 13135.473, 'text': 'Back in the JSX.', 'start': 13133.772, 'duration': 1.701}, {'end': 13137.393, 'text': 'we can also prevent this.', 'start': 13135.473, 'duration': 1.92}, {'end': 13138.474, 'text': 'your list is empty.', 'start': 13137.393, 'duration': 1.081}, {'end': 13144.177, 'text': 'or if the list was not empty and we still had some error, that would display, we can prevent that from showing.', 'start': 13139.174, 'duration': 5.003}], 'summary': 'Identified and corrected error in data reception, preventing empty lists and erroneous displays.', 'duration': 28.206, 'max_score': 13115.971, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go13115971.jpg'}, {'end': 13949.325, 'src': 'embed', 'start': 13917.724, 'weight': 0, 'content': [{'end': 13920.066, 'text': 'Headers And so this is an object.', 'start': 13917.724, 'duration': 2.342}, {'end': 13925.59, 'text': "And inside the headers, we'll define the content-type.", 'start': 13920.466, 'duration': 5.124}, {'end': 13930.875, 'text': 'And this will be application slash JSON.', 'start': 13926.291, 'duration': 4.584}, {'end': 13934.841, 'text': 'And then we can put a comma after that headers object.', 'start': 13932.06, 'duration': 2.781}, {'end': 13937.321, 'text': 'And we need to define the body.', 'start': 13935.721, 'duration': 1.6}, {'end': 13944.343, 'text': 'And for the body, the information we want to send, we need to use JSON stringify.', 'start': 13937.782, 'duration': 6.561}, {'end': 13949.325, 'text': 'And here we can pass in my new item as we defined above.', 'start': 13944.363, 'duration': 4.962}], 'summary': 'Defining headers and body for sending json data.', 'duration': 31.601, 'max_score': 13917.724, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go13917724.jpg'}], 'start': 13115.971, 'title': 'Handling errors, managing loading state, and updating state with api sync', 'summary': 'Covers handling errors in jsx and fetch requests, managing loading state and api requests, and updating the state in the application with set items and set functions, including key concepts such as preventing error messages, simulating api loading time, and making post requests.', 'chapters': [{'end': 13210.559, 'start': 13115.971, 'title': 'Handling errors in jsx and fetch requests', 'summary': 'Covers handling errors in jsx and fetch requests, including preventing error messages from displaying, checking for empty lists, and ensuring proper display of content when there are no errors.', 'duration': 94.588, 'highlights': ['The chapter covers handling errors in JSX and fetch requests, including preventing error messages from displaying, checking for empty lists, and ensuring proper display of content when there are no errors.', 'The code demonstrates the prevention of error messages from displaying in JSX by checking if no fetch error state is false, and then only displaying the content component.', "The transcript also highlights the successful handling of fetch requests, catching errors, including response errors that wouldn't normally be caught by the catch error block in the try catch block."]}, {'end': 13805.708, 'start': 13210.559, 'title': 'Managing loading state and api requests', 'summary': 'Covers simulating api loading time using set timeout, managing loading state with usestate and displaying loading message, and creating a generic api request function with async, await, and fetch for crud operations.', 'duration': 595.149, 'highlights': ['Simulating API loading time using set timeout The chapter demonstrates simulating API loading time by using set timeout to wait for two seconds before making the async call to fetch items.', 'Managing loading state with useState and displaying loading message It explains the use of useState to manage loading state, where is loading is set to true initially and then set to false after the async call completion. It also covers displaying a loading message in JSX based on the loading state.', 'Creating a generic API request function for CRUD operations The chapter introduces the creation of a generic API request function using async, await, and fetch, which accepts URL and options object, handles try-catch blocks, and returns the error message in the finally block.']}, {'end': 14049.691, 'start': 13805.728, 'title': 'Updating state and api sync', 'summary': 'Discusses updating the state in the application with set items and set functions, instantly showing the new state, and handling errors when out of sync with the api, while also explaining the process of making a post request to update the rest api.', 'duration': 243.963, 'highlights': ['Updating state with set items and set functions to show new state instantly The process of updating the state with set items and set functions allows for instantly showing the new state in the application.', 'Handling errors when out of sync with the API The function includes handling errors when the application is out of sync with the API, displaying relevant error messages.', 'Making a POST request to update the REST API The explanation covers the process of making a POST request to update the REST API, including defining post options and sending the request.']}], 'duration': 933.72, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go13115971.jpg', 'highlights': ['The chapter introduces the creation of a generic API request function using async, await, and fetch, which accepts URL and options object, handles try-catch blocks, and returns the error message in the finally block.', 'The process of updating the state with set items and set functions allows for instantly showing the new state in the application.', 'The explanation covers the process of making a POST request to update the REST API, including defining post options and sending the request.', 'Managing loading state with useState and displaying loading message It explains the use of useState to manage loading state, where is loading is set to true initially and then set to false after the async call completion. It also covers displaying a loading message in JSX based on the loading state.', 'The chapter covers handling errors in JSX and fetch requests, including preventing error messages from displaying, checking for empty lists, and ensuring proper display of content when there are no errors.']}, {'end': 15334.722, 'segs': [{'end': 14079.786, 'src': 'embed', 'start': 14049.751, 'weight': 2, 'content': [{'end': 14055.235, 'text': "So if we look back here, we can just check now in what we've received as our result.", 'start': 14049.751, 'duration': 5.484}, {'end': 14063.36, 'text': 'And we can say if we have a result, that means the message is not null, then we need to set the fetch error.', 'start': 14055.355, 'duration': 8.005}, {'end': 14071.763, 'text': "And of course, when that is not null, it will actually display in our JSX as we've set that up previously.", 'start': 14064.261, 'duration': 7.502}, {'end': 14073.904, 'text': "So let's go ahead and save that.", 'start': 14072.323, 'duration': 1.581}, {'end': 14079.786, 'text': 'And after that save, I want to display the terminal so we can actually see JSON server at work.', 'start': 14074.424, 'duration': 5.362}], 'summary': 'Check and set fetch error if result is not null, then display in jsx and view json server.', 'duration': 30.035, 'max_score': 14049.751, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go14049751.jpg'}, {'end': 14796.916, 'src': 'embed', 'start': 14771.469, 'weight': 0, 'content': [{'end': 14776.794, 'text': "But if I click Posts, the whole presentation changes and now we're displaying the posts.", 'start': 14771.469, 'duration': 5.325}, {'end': 14782.521, 'text': "Likewise, if I click comments, we're now displaying a list of all of the comments received.", 'start': 14776.974, 'duration': 5.547}, {'end': 14785.304, 'text': 'And so that is part A of the challenge.', 'start': 14782.981, 'duration': 2.323}, {'end': 14793.353, 'text': 'Create this same application that provides these different resources on the page at the different button clicks.', 'start': 14785.464, 'duration': 7.889}, {'end': 14796.916, 'text': "Now, I'm going to give a couple of hints for this Part A.", 'start': 14793.934, 'duration': 2.982}], 'summary': 'Create an application that displays different resources on button clicks', 'duration': 25.447, 'max_score': 14771.469, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go14771469.jpg'}, {'end': 14942.165, 'src': 'embed', 'start': 14914.813, 'weight': 3, 'content': [{'end': 14918.235, 'text': "this will take a little while, so i'll come back when this completes.", 'start': 14914.813, 'duration': 3.422}, {'end': 14922.403, 'text': 'Okay, create React app has finished.', 'start': 14920.382, 'duration': 2.021}, {'end': 14924.344, 'text': 'We have our happy hacking message.', 'start': 14922.463, 'duration': 1.881}, {'end': 14927.606, 'text': "And now remember we're still in the parent folder.", 'start': 14924.865, 'duration': 2.741}, {'end': 14931.989, 'text': 'So we need to go to the file menu and then open folder.', 'start': 14927.726, 'duration': 4.263}, {'end': 14935.762, 'text': 'And from there, we should be able to choose.', 'start': 14932.941, 'duration': 2.821}, {'end': 14942.165, 'text': "We've got React series, and then I'm choosing my 15 tut, whatever you named your folder.", 'start': 14935.842, 'duration': 6.323}], 'summary': 'Created react app in parent folder, opened chosen folder for further work.', 'duration': 27.352, 'max_score': 14914.813, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go14914813.jpg'}, {'end': 15338.584, 'src': 'embed', 'start': 15313.3, 'weight': 1, 'content': [{'end': 15319.627, 'text': 'and of course we know in a serious project we should check to see if the response is okay,', 'start': 15313.3, 'duration': 6.327}, {'end': 15324.212, 'text': "log an error and not set the items as we've seen in the previous tutorials.", 'start': 15319.627, 'duration': 4.585}, {'end': 15327.896, 'text': 'But this is the basic fetch here with the try catch block.', 'start': 15324.633, 'duration': 3.263}, {'end': 15333.221, 'text': 'And now all we need to do at the bottom is call fetch items again.', 'start': 15328.296, 'duration': 4.925}, {'end': 15334.722, 'text': "this isn't returning anything.", 'start': 15333.221, 'duration': 1.501}, {'end': 15338.584, 'text': "we don't have a return for data, so we don't really need to await this fetch here.", 'start': 15334.722, 'duration': 3.862}], 'summary': 'The tutorial covers error logging and refactoring the fetch function.', 'duration': 25.284, 'max_score': 15313.3, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go15313300.jpg'}], 'start': 14049.751, 'title': 'Handling response codes, crud operations, and fetch api in react', 'summary': 'Discusses handling response codes like 304, 404, and 201 in a json server, updating json data, and handling list items in react. it covers update and delete operations in crud, using the patch method and defining request urls with specific ids. additionally, it explores crud operations with the fetch api, demonstrating create, read, update, and delete functionalities, including a challenge involving requesting and displaying resources from the json placeholder website. the chapter also delves into using useeffect to fetch and display objects in react and setting up a new react project.', 'chapters': [{'end': 14268.158, 'start': 14049.751, 'title': 'Handling response codes and updating json data', 'summary': 'Discusses handling response codes, such as 304, 404, and 201, in a json server, as well as updating json data and handling list items in react, emphasizing the significance of 304 response as using cached information and the correct handling of different response codes.', 'duration': 218.407, 'highlights': ['The significance of 304 response as using cached information and the correct handling of different response codes, such as 404 and 201, in a JSON server.', 'Updating JSON data and handling list items in React, emphasizing the importance of correctly defining the item that is getting updated and using the appropriate methods like filter for the purpose.', 'The process of checking and defining the item that is getting updated, including the utilization of filter and the importance of consistency in the code structure.']}, {'end': 14580.961, 'start': 14268.838, 'title': 'Update and delete in crud operations', 'summary': 'Covers updating a specific part of a specific record using the patch method and defining the request url with specific ids, followed by handling delete operations by setting the method equal to delete and defining the request url.', 'duration': 312.123, 'highlights': ["Updating a specific part of a specific record using the patch method The method 'patch' is used to update just a specific part of a specific record by setting the update options with the method as patch and defining the body using JSON.stringify to update a specific item.", 'Defining the request URL with specific IDs The request URL is defined using a template literal with the API URL and the specific ID passed in, allowing access to a specific post for updating with patch.', 'Handling delete operations by setting the method equal to delete The delete options are defined with the method set as delete, providing a simple way to handle delete operations.']}, {'end': 14819.653, 'start': 14582.981, 'title': 'Fetch api and crud operations', 'summary': 'Covers the implementation of crud operations using the fetch api to interact with a fake api, successfully demonstrating create, read, update, and delete functionalities, and introduces a two-part challenge involving requesting and displaying different resources from the json placeholder website using the fetch api.', 'duration': 236.672, 'highlights': ['The chapter demonstrates the successful implementation of CRUD operations using the Fetch API, showcasing the handling of various requests such as get, post, patch, and delete, with all requests returning the expected 200 responses.', 'It introduces a two-part challenge involving requesting and displaying different resources from the JSON placeholder website using the Fetch API, with part A requiring the creation of an application that provides different resources on the page based on button clicks, showcasing the handling of user, posts, and comments resources.', 'Part A of the challenge requires printing a list of each of the objects received from the JSON placeholder website, displaying the full JSON objects in an unordered list format on the page.']}, {'end': 15334.722, 'start': 14820.094, 'title': 'React fetch and display objects', 'summary': 'Discusses using useeffect to fetch and display objects in react, including the need to use json.stringify to display javascript objects and the process of cleaning up and setting up a new react project.', 'duration': 514.628, 'highlights': ['The chapter discusses using useEffect to fetch and display objects in React The chapter emphasizes the use of useEffect to fetch and display objects in React, ensuring that the useEffect runs every time the request type state changes.', 'The need to use JSON.stringify to display JavaScript objects is highlighted The chapter points out the necessity of using JSON.stringify to display JavaScript objects in the web page, providing a solution to a potential hiccup in the process.', 'The process of cleaning up and setting up a new React project is detailed The chapter provides detailed steps for cleaning up and setting up a new React project, including deleting unnecessary files, removing imports, and defining the API URL and request type.']}], 'duration': 1284.971, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go14049751.jpg', 'highlights': ['The chapter demonstrates the successful implementation of CRUD operations using the Fetch API, showcasing the handling of various requests such as get, post, patch, and delete, with all requests returning the expected 200 responses.', 'The process of checking and defining the item that is getting updated, including the utilization of filter and the importance of consistency in the code structure.', 'The need to use JSON.stringify to display JavaScript objects is highlighted The chapter points out the necessity of using JSON.stringify to display JavaScript objects in the web page, providing a solution to a potential hiccup in the process.', 'Defining the request URL with specific IDs The request URL is defined using a template literal with the API URL and the specific ID passed in, allowing access to a specific post for updating with patch.']}, {'end': 16335.154, 'segs': [{'end': 15362.919, 'src': 'embed', 'start': 15334.722, 'weight': 1, 'content': [{'end': 15338.584, 'text': "we don't have a return for data, so we don't really need to await this fetch here.", 'start': 15334.722, 'duration': 3.862}, {'end': 15345.309, 'text': "if we did, we could use an instantly invoked function and await the return of this fetch, but that's not needed.", 'start': 15338.584, 'duration': 6.725}, {'end': 15351.633, 'text': "so just put the semicolon after that, call and save and we've really completed our use effect.", 'start': 15345.309, 'duration': 6.324}, {'end': 15354.535, 'text': 'that will fetch these different resources as they change.', 'start': 15351.633, 'duration': 2.902}, {'end': 15360.638, 'text': "And now we've essentially handled the logic here in our function for the app component.", 'start': 15355.476, 'duration': 5.162}, {'end': 15362.919, 'text': 'So we need to think about the display.', 'start': 15361.138, 'duration': 1.781}], 'summary': 'Using an instantly invoked function to await fetch return is not needed; useeffect handles logic for fetching resources as they change.', 'duration': 28.197, 'max_score': 15334.722, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go15334722.jpg'}, {'end': 15505.319, 'src': 'embed', 'start': 15454.801, 'weight': 2, 'content': [{'end': 15457.282, 'text': "So I've got request type and set request type.", 'start': 15454.801, 'duration': 2.481}, {'end': 15463.127, 'text': "And then in the return, instead of a div, we're going to have a form.", 'start': 15458.063, 'duration': 5.064}, {'end': 15468.183, 'text': "And for this form, oh, and I use capitals, that's why it's green.", 'start': 15464.741, 'duration': 3.442}, {'end': 15470.005, 'text': 'What we really need is lowercase.', 'start': 15468.243, 'duration': 1.762}, {'end': 15474.548, 'text': "So I'm gonna select both of these and say form, there it recognizes it as an HTML element.", 'start': 15470.065, 'duration': 4.483}, {'end': 15486.262, 'text': "So again, use lowercase, my bad there, but we'll have an onSubmit, and have this equal to an anonymous function that has the event.", 'start': 15475.208, 'duration': 11.054}, {'end': 15497.031, 'text': "And here we'll just say e.preventDefault because we do not want the default submit that reloads the page every time a button is clicked.", 'start': 15487.103, 'duration': 9.928}, {'end': 15500.214, 'text': 'So that easily eliminates that possibility.', 'start': 15497.211, 'duration': 3.003}, {'end': 15505.319, 'text': "Now our form is going to contain buttons, but we haven't really created those yet.", 'start': 15500.834, 'duration': 4.485}], 'summary': 'Converting div to form, using lowercase, and preventing default submit', 'duration': 50.518, 'max_score': 15454.801, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go15454801.jpg'}, {'end': 15833.397, 'src': 'embed', 'start': 15808.373, 'weight': 0, 'content': [{'end': 15814.439, 'text': 'And with the application launched, you can now see the three buttons that we have at the very top of the webpage.', 'start': 15808.373, 'duration': 6.066}, {'end': 15816.541, 'text': "And so far, that's what it is.", 'start': 15814.999, 'duration': 1.542}, {'end': 15819.343, 'text': "It's an application with a form and three buttons.", 'start': 15816.621, 'duration': 2.722}, {'end': 15827.411, 'text': "I'm going to go ahead and select Visual Studio Code and resize it so it kind of is to the left and Chrome is to the right.", 'start': 15819.484, 'duration': 7.927}, {'end': 15828.812, 'text': "But we're started.", 'start': 15827.952, 'duration': 0.86}, {'end': 15833.397, 'text': "And now that as we work on our application, we'll continue to see the changes over here.", 'start': 15828.933, 'duration': 4.464}], 'summary': 'An application with a form and three buttons launched, with visual studio code and chrome being used for development.', 'duration': 25.024, 'max_score': 15808.373, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go15808373.jpg'}, {'end': 16317.906, 'src': 'embed', 'start': 16283.58, 'weight': 5, 'content': [{'end': 16287.742, 'text': 'So if you want to go ahead and do this without hearing the hints, pause the video now.', 'start': 16283.58, 'duration': 4.162}, {'end': 16290.403, 'text': 'And now I can give the hints.', 'start': 16288.482, 'duration': 1.921}, {'end': 16297.947, 'text': "The hints for this, you're going to need to map through, of course, each key of the object.", 'start': 16291.003, 'duration': 6.944}, {'end': 16302.752, 'text': "And to do that, you're going to use object.entries.", 'start': 16298.588, 'duration': 4.164}, {'end': 16308.297, 'text': 'And this is just general JavaScript knowledge, not necessarily just about React.', 'start': 16302.912, 'duration': 5.385}, {'end': 16317.906, 'text': "So if you don't know how to map through properties of an object, because map usually applies to an array, you need to look up object.entries.", 'start': 16308.658, 'duration': 9.248}], 'summary': 'Use object.entries to map through each key of an object in javascript.', 'duration': 34.326, 'max_score': 16283.58, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go16283580.jpg'}], 'start': 15334.722, 'title': 'React component implementation', 'summary': 'Covers logic handling, creating a reusable button component, and mapping and rendering components in a react application. it includes passing props, button attributes, integration of components, and displaying data from different resources and nested objects.', 'chapters': [{'end': 15753.717, 'start': 15334.722, 'title': 'Handling logic and display in app component', 'summary': 'Covers handling the logic for fetching resources and creating a form component, including passing props and setting button attributes, to display different resource types.', 'duration': 418.995, 'highlights': ['Creating and handling logic for fetching resources in the app component The function for the app component is completed by handling the logic for fetching different resources, eliminating the need for awaiting the fetch, and using an instantly invoked function.', 'Creating a form component and passing props A form component is created and receives props for request type and set request type, with emphasis on preventing default form submission.', 'Creating a reusable button component and setting button attributes A reusable button component is created, with emphasis on setting button text, request type, and set request type as props for each button.']}, {'end': 16023.917, 'start': 15754.397, 'title': 'Building a reusable button component', 'summary': 'Covers the creation and implementation of a reusable button component in a react application, including its integration into a form component and the subsequent launch and display of the application, with a focus on react and not css, as well as the subsequent use and display of data from json placeholder.', 'duration': 269.52, 'highlights': ['The chapter covers the creation and implementation of a reusable button component in a React application. The focus of the chapter is on building a reusable button component in a React application.', 'The button component is integrated into the form component and displayed in the application, with three instances of the button being used. The button component is utilized three times within the form component and displayed in the application.', 'The application is launched and the three buttons are displayed at the top of the webpage. Upon launching the application, three buttons are displayed at the top of the webpage.', 'Data from JSON placeholder is utilized and displayed in the application. Data from JSON placeholder is used and displayed in the application, with an array of 10 items being logged.']}, {'end': 16335.154, 'start': 16024.237, 'title': 'React component mapping and rendering', 'summary': 'Covers mapping through items to render an unordered list, using reusable components, and then diving deeper into displaying a table with nested object properties, leveraging object.entries and json.stringify. the challenge involves displaying data from different resources and handling nested objects within the users resource.', 'duration': 310.917, 'highlights': ['The challenge involves displaying data from different resources and handling nested objects within the users resource. The challenge requires displaying data from different resources and handling nested objects within the users resource, which involves diving deeper than just printing an unordered list and requires leveraging object.entries and JSON.stringify.', 'Mapping through items to render an unordered list and using reusable components. The process involves mapping through items to render an unordered list and using reusable components to display individual items, demonstrating the application of React component mapping and rendering.', 'Using object.entries to map through each key of the object and leveraging JSON.stringify for nested objects within the users resource. The chapter explains the use of object.entries to map through each key of the object and highlights the application of JSON.stringify for nested objects within the users resource, providing insights into handling nested object properties in React component rendering.']}], 'duration': 1000.432, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go15334722.jpg', 'highlights': ['Creating a reusable button component and setting button attributes', 'The button component is integrated into the form component and displayed in the application, with three instances of the button being used', 'Data from JSON placeholder is utilized and displayed in the application', 'Mapping through items to render an unordered list and using reusable components', 'Using object.entries to map through each key of the object and leveraging JSON.stringify for nested objects within the users resource', 'Creating and handling logic for fetching resources in the app component The function for the app component is completed by handling the logic for fetching different resources, eliminating the need for awaiting the fetch, and using an instantly invoked function', 'Creating a form component and passing props A form component is created and receives props for request type and set request type, with emphasis on preventing default form submission', 'The challenge involves displaying data from different resources and handling nested objects within the users resource']}, {'end': 18156.914, 'segs': [{'end': 16514.43, 'src': 'embed', 'start': 16482.532, 'weight': 6, 'content': [{'end': 16483.832, 'text': 'So that is what I call it.', 'start': 16482.532, 'duration': 1.3}, {'end': 16487.634, 'text': 'You could call it something else if you want, but it just makes sense to call it a table component.', 'start': 16483.873, 'duration': 3.761}, {'end': 16492.998, 'text': "Again, we'll just pass the items, just like we did with the list, to the table component.", 'start': 16488.154, 'duration': 4.844}, {'end': 16496.88, 'text': 'And after that, we need to go ahead and create it.', 'start': 16494.618, 'duration': 2.262}, {'end': 16499.08, 'text': "And then I'll come back and save the app file.", 'start': 16496.96, 'duration': 2.12}, {'end': 16505.705, 'text': "So I'm going to create a new file here that will be the table component, table JS with a capital T.", 'start': 16499.161, 'duration': 6.544}, {'end': 16508.086, 'text': 'Press Control-Alt and R.', 'start': 16505.705, 'duration': 2.381}, {'end': 16511.088, 'text': "And now here, I'll do underscore R-A-F-C-E.", 'start': 16508.086, 'duration': 3.002}, {'end': 16514.43, 'text': "And now we've got our functional table component.", 'start': 16512.168, 'duration': 2.262}], 'summary': 'Creating a table component for an app, passing items like a list, and saving the app file.', 'duration': 31.898, 'max_score': 16482.532, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go16482532.jpg'}, {'end': 17492.979, 'src': 'embed', 'start': 17462.321, 'weight': 0, 'content': [{'end': 17465.002, 'text': "I'm going to collapse the open editors here for now.", 'start': 17462.321, 'duration': 2.681}, {'end': 17469.243, 'text': "And now inside of the source folder, we'll start creating our components.", 'start': 17465.542, 'duration': 3.701}, {'end': 17473.73, 'text': "And so we need a new file, and we'll have header.js.", 'start': 17470.143, 'duration': 3.587}, {'end': 17478.179, 'text': "And now inside of this file, I'm going to press Control, Alt, and the letter R.", 'start': 17474.492, 'duration': 3.687}, {'end': 17483.311, 'text': "I believe it's Command Shift and R on Mac, if I remember right.", 'start': 17479.508, 'duration': 3.803}, {'end': 17486.313, 'text': 'I believe a viewer told me that, but I cannot confirm that.', 'start': 17483.491, 'duration': 2.822}, {'end': 17492.979, 'text': "Right now, I'll type underscore R-A-F-C-E, and this is because of the React Snippets extension that I'm using.", 'start': 17486.774, 'duration': 6.205}], 'summary': 'Creating a new header.js file and using react snippets extension for development.', 'duration': 30.658, 'max_score': 17462.321, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go17462321.jpg'}, {'end': 17625.148, 'src': 'embed', 'start': 17593.812, 'weight': 5, 'content': [{'end': 17594.993, 'text': "because that's what this will be.", 'start': 17593.812, 'duration': 1.181}, {'end': 17599.198, 'text': "And now we've got our new post here to export.", 'start': 17596.095, 'duration': 3.103}, {'end': 17601.52, 'text': 'And then we need a home.', 'start': 17599.918, 'duration': 1.602}, {'end': 17605.894, 'text': 'I guess I could have done home first That new post works.', 'start': 17601.58, 'duration': 4.314}, {'end': 17615.741, 'text': "Inside of home, I'm going to once again paste in the full component, select all the instances of header, and put in home.", 'start': 17606.654, 'duration': 9.087}, {'end': 17625.148, 'text': "And then once again, I'm going to change the home element here to a main element and save.", 'start': 17616.522, 'duration': 8.626}], 'summary': 'Updating a new post and home element in the code.', 'duration': 31.336, 'max_score': 17593.812, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go17593812.jpg'}, {'end': 17721.567, 'src': 'embed', 'start': 17658.8, 'weight': 8, 'content': [{'end': 17669.63, 'text': 'can paste this again, select all of the header, change it to post page, then select the post page in the element and change that to main.', 'start': 17658.8, 'duration': 10.83}, {'end': 17674.174, 'text': "It didn't change the ending one for me, so I'll do that now.", 'start': 17670.651, 'duration': 3.523}, {'end': 17678.017, 'text': 'And I believe we had a missing component.', 'start': 17675.215, 'duration': 2.802}, {'end': 17683.002, 'text': 'Once again, pasting in.', 'start': 17681.901, 'duration': 1.101}, {'end': 17690.434, 'text': 'Selecting all of header, changing it to missing, and then changing the element to main.', 'start': 17684.69, 'duration': 5.744}, {'end': 17695.857, 'text': "OK, saving those, I think we're still missing a footer component.", 'start': 17691.915, 'duration': 3.942}, {'end': 17700.841, 'text': "So I'll paste in the header.", 'start': 17699.76, 'duration': 1.081}, {'end': 17712.502, 'text': 'And for the last time, selecting all of these and changing the footer to a lowercase footer,', 'start': 17704.457, 'duration': 8.045}, {'end': 17717.385, 'text': 'because that is an HTML element as well that we want to use a semantic element.', 'start': 17712.502, 'duration': 4.883}, {'end': 17721.567, 'text': 'So we save those, and we should have all of our different components.', 'start': 17717.765, 'duration': 3.802}], 'summary': 'Updating html components: header, post page, main, and footer.', 'duration': 62.767, 'max_score': 17658.8, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go17658800.jpg'}, {'end': 17938.914, 'src': 'embed', 'start': 17867.253, 'weight': 1, 'content': [{'end': 17872.094, 'text': "So for the home page, we'll start out with a route component here.", 'start': 17867.253, 'duration': 4.841}, {'end': 17875.195, 'text': "And then we're going to put path equals.", 'start': 17872.114, 'duration': 3.081}, {'end': 17880.076, 'text': "And we'll put the slash, because we want this to be the default with the root path.", 'start': 17875.715, 'duration': 4.361}, {'end': 17884.477, 'text': 'So it shares the path with the app component overall.', 'start': 17880.716, 'duration': 3.761}, {'end': 17888.678, 'text': "And we're already routing to the app component that contains all of these components.", 'start': 17884.797, 'duration': 3.881}, {'end': 17893.919, 'text': 'So now we have surrounded our home component with the route of path.', 'start': 17889.438, 'duration': 4.481}, {'end': 17901.442, 'text': "Now this could create an issue, but I'm not going to show you what it is until we actually have the issue here to demonstrate.", 'start': 17894.62, 'duration': 6.822}, {'end': 17911.604, 'text': "So for the next one, we're going to create a route and this path is going to be equal to not just the slash, but also post.", 'start': 17901.522, 'duration': 10.082}, {'end': 17916.366, 'text': "And now we'll go ahead and put that closing route after it as well.", 'start': 17913.185, 'duration': 3.181}, {'end': 17922.621, 'text': "So we'll tab in our new post and have the closing route.", 'start': 17917.717, 'duration': 4.904}, {'end': 17929.509, 'text': 'Now the next one, the post page where we see details for each post.', 'start': 17922.781, 'duration': 6.728}, {'end': 17932.651, 'text': 'this will have a slightly different path,', 'start': 17929.509, 'duration': 3.142}, {'end': 17938.914, 'text': "because we want to put a parameter in the path and we'll have to use another React router hook to grab that parameter.", 'start': 17932.651, 'duration': 6.263}], 'summary': 'Creating routes for home page, post page, and post details with parameters using react router.', 'duration': 71.661, 'max_score': 17867.253, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go17867253.jpg'}, {'end': 17991.186, 'src': 'embed', 'start': 17968.132, 'weight': 3, 'content': [{'end': 17975.477, 'text': 'If you remember how we handled the route for the app itself inside the index.js, we can do the same thing here.', 'start': 17968.132, 'duration': 7.345}, {'end': 17985.343, 'text': "So we can say route, then let's specify the path, and the path for about will be slash about and then we can specify the component.", 'start': 17975.497, 'duration': 9.846}, {'end': 17988.965, 'text': "and here i'm just going to put about.", 'start': 17985.343, 'duration': 3.622}, {'end': 17991.186, 'text': "now i'll do something very similar for missing.", 'start': 17988.965, 'duration': 2.221}], 'summary': 'Setting up routes for about and missing in index.js.', 'duration': 23.054, 'max_score': 17968.132, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go17968132.jpg'}], 'start': 16335.194, 'title': 'Nested objects and react routing', 'summary': 'Discusses the presence of nested objects and table formatting, challenges with css formatting, transition to a table component, usage of object.entries and json.stringify, and building a react router project for a reactjs blog application with instantaneous response.', 'chapters': [{'end': 16658.58, 'start': 16335.194, 'title': 'Nested objects and table formatting', 'summary': 'Discusses the presence of nested objects in the users area, challenges with css formatting for a fixed position form, and the transition from using a list component to a table component in the functional app, emphasizing the creation of a table container and the mapping of items for proper formatting.', 'duration': 323.386, 'highlights': ['The presence of nested objects in the users area is emphasized, contrasting with the absence of nested objects in posts and comments. The chapter emphasizes the presence of nested objects in the users area, while contrasting it with the absence of nested objects in posts and comments.', 'Challenges with CSS formatting for a fixed position form are addressed, ensuring its stability during page scrolling. The chapter addresses challenges with CSS formatting for a fixed position form, ensuring its stability during page scrolling.', 'Transition from using a list component to a table component in the functional app is highlighted, emphasizing the creation of a table container and the mapping of items for proper formatting. The chapter highlights the transition from using a list component to a table component in the functional app, emphasizing the creation of a table container and the mapping of items for proper formatting.']}, {'end': 16878.569, 'start': 16660.606, 'title': 'Using object.entries and json.stringify', 'summary': 'Covers the usage of object.entries and json.stringify to iterate through objects and handle nested objects in a table component, improving data visualization and user experience.', 'duration': 217.963, 'highlights': ['The chapter explains the usage of Object.entries and .map to iterate through keys of different objects, providing a more dynamic approach than listing them all out as a JSON string.', 'It emphasizes the need for JSON.stringify to handle nested objects from the user resource, ensuring proper data visualization and addressing the presence of nested objects in the address field.', 'The chapter demonstrates the implementation of reusable components such as table row and data cell, enhancing code modularity and reusability for improved development efficiency.']}, {'end': 17388.715, 'start': 16881.278, 'title': 'Building react router project', 'summary': 'Discusses the process of building a react router project, including setting up a new react project, installing react router, and utilizing react router to create different pages for a reactjs blog application with instantaneous response.', 'duration': 507.437, 'highlights': ['The chapter discusses the process of building a React Router project It covers setting up a new React project, installing React Router, and utilizing React Router to create different pages for a ReactJS blog application.', 'Utilizing React Router to create different pages for a ReactJS blog application with instantaneous response It demonstrates how React Router allows for the creation of different pages for a ReactJS blog application with almost instantaneous response, enhancing user experience.', 'Setting up a new React project and installing React Router It explains the process of setting up a new React project using create-react-app and installing React Router as a production dependency.']}, {'end': 17772.351, 'start': 17389.375, 'title': 'React router setup and component creation', 'summary': "Covers the process of importing necessary components from react router, creating different components, and incorporating them into the app's jsx, resulting in the creation of header, nav, new post, post page, about, and missing components.", 'duration': 382.976, 'highlights': ["The chapter covers the process of importing necessary components from React Router, creating different components, and incorporating them into the app's JSX, resulting in the creation of header, nav, new post, post page, about, and missing components. The transcript details the process of importing components from React Router, creating various components such as header, nav, new post, post page, about, and missing, and incorporating them into the app's JSX.", 'React Router does not make requests from the server, improving the user experience by routing within the app. React Router does not make server requests, enhancing user experience by routing within the app, leading to faster responses.', 'The speaker demonstrates the use of React Snippets extension for creating functional components and mentions keyboard shortcuts for code generation. The speaker showcases the utilization of the React Snippets extension for creating functional components and provides insights into using keyboard shortcuts for code generation.']}, {'end': 18156.914, 'start': 17772.451, 'title': 'Setting up routing for react app', 'summary': 'Discusses setting up routing for a react app using react router, including creating routes for different components and addressing issues with matching paths, ensuring that all routes are working as expected.', 'duration': 384.463, 'highlights': ['The chapter demonstrates setting up routing for a React app using React Router, including creating routes for different components and ensuring that all routes are working as expected.', 'The author explains the process of creating routes for different components, such as the home page, post page, about page, and a catch-all for missing routes, to ensure proper navigation within the app.', "The chapter addresses the issue of matching paths in routing by adding the 'exact' keyword to the routes, ensuring that the correct components are rendered based on the URL path.", "The author highlights the importance of adding the 'exact' keyword to routes to avoid potential issues with matching paths and to ensure that the correct components are rendered based on the URL path."]}], 'duration': 1821.72, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go16335194.jpg', 'highlights': ['The chapter emphasizes the presence of nested objects in the users area, while contrasting it with the absence of nested objects in posts and comments.', 'Challenges with CSS formatting for a fixed position form are addressed, ensuring its stability during page scrolling.', 'The chapter highlights the transition from using a list component to a table component in the functional app, emphasizing the creation of a table container and the mapping of items for proper formatting.', 'The chapter explains the usage of Object.entries and .map to iterate through keys of different objects, providing a more dynamic approach than listing them all out as a JSON string.', 'The chapter discusses the process of building a React Router project, covering setting up a new React project, installing React Router, and utilizing React Router to create different pages for a ReactJS blog application.', "The chapter covers the process of importing necessary components from React Router, creating different components, and incorporating them into the app's JSX, resulting in the creation of header, nav, new post, post page, about, and missing components.", 'React Router does not make server requests, enhancing user experience by routing within the app, leading to faster responses.', 'The chapter demonstrates setting up routing for a React app using React Router, including creating routes for different components and ensuring that all routes are working as expected.', 'The author explains the process of creating routes for different components, such as the home page, post page, about page, and a catch-all for missing routes, to ensure proper navigation within the app.', "The chapter addresses the issue of matching paths in routing by adding the 'exact' keyword to the routes, ensuring that the correct components are rendered based on the URL path."]}, {'end': 19369.328, 'segs': [{'end': 18323.961, 'src': 'embed', 'start': 18292.804, 'weight': 2, 'content': [{'end': 18294.988, 'text': 'And this needs an extra S and a capital N.', 'start': 18292.804, 'duration': 2.184}, {'end': 18295.469, 'text': 'There we go.', 'start': 18294.988, 'duration': 0.481}, {'end': 18297.553, 'text': 'And this is going to be..', 'start': 18296.17, 'duration': 1.383}, {'end': 18301.032, 'text': 'header as well for the class name.', 'start': 18299.031, 'duration': 2.001}, {'end': 18307.794, 'text': "And then instead of saying header here in the H1, it's going to actually use the title prop to display.", 'start': 18301.532, 'duration': 6.262}, {'end': 18309.295, 'text': 'So we can save that.', 'start': 18308.195, 'duration': 1.1}, {'end': 18313.757, 'text': "And we might get an error, because no, it's just blank, because we haven't passed the title prop.", 'start': 18309.375, 'duration': 4.382}, {'end': 18319.559, 'text': 'OK, so if we go back to the app.js, here in the header, we can now pass the title prop.', 'start': 18313.957, 'duration': 5.602}, {'end': 18323.961, 'text': "And we'll just say React.js blog.", 'start': 18320.199, 'duration': 3.762}], 'summary': "Transcript: adding a title prop to display 'react.js blog'.", 'duration': 31.157, 'max_score': 18292.804, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go18292804.jpg'}, {'end': 18447.675, 'src': 'embed', 'start': 18418.054, 'weight': 1, 'content': [{'end': 18420.475, 'text': 'And that needs to match the ID of the input.', 'start': 18418.054, 'duration': 2.421}, {'end': 18422.916, 'text': 'And then we can close that.', 'start': 18421.475, 'duration': 1.441}, {'end': 18431.343, 'text': "And I'm going to say search posts, because the label just essentially needs to describe what the input does.", 'start': 18423.077, 'duration': 8.266}, {'end': 18433.785, 'text': "And then we'll have our input.", 'start': 18431.363, 'duration': 2.422}, {'end': 18437.529, 'text': "And now I'm going to put all of the attributes for the input.", 'start': 18434.226, 'duration': 3.303}, {'end': 18439.01, 'text': 'on separate lines.', 'start': 18438.209, 'duration': 0.801}, {'end': 18443.012, 'text': "Well, we know we need an ID that's searched, so it matches the HTML4 above.", 'start': 18439.13, 'duration': 3.882}, {'end': 18447.675, 'text': "We also want to set the type, and that's going to be a text input.", 'start': 18443.653, 'duration': 4.022}], 'summary': 'Creating a search input with matching id and type as text.', 'duration': 29.621, 'max_score': 18418.054, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go18418054.jpg'}, {'end': 18632.641, 'src': 'embed', 'start': 18580.621, 'weight': 0, 'content': [{'end': 18583.783, 'text': 'so now we save those and we see the different links up here.', 'start': 18580.621, 'duration': 3.162}, {'end': 18586.584, 'text': 'the css has already applied itself.', 'start': 18583.783, 'duration': 2.801}, {'end': 18591.366, 'text': 'so now let me click post and yes, we went to our new post page.', 'start': 18586.584, 'duration': 4.782}, {'end': 18593.747, 'text': "click home, we're at the home page.", 'start': 18591.366, 'duration': 2.381}, {'end': 18594.808, 'text': 'click about.', 'start': 18593.747, 'duration': 1.061}, {'end': 18596.108, 'text': "we're at the about page.", 'start': 18594.808, 'duration': 1.3}, {'end': 18597.209, 'text': 'our links are working.', 'start': 18596.108, 'duration': 1.101}, {'end': 18601.57, 'text': "Now we still haven't created our state with search and setSearch.", 'start': 18597.549, 'duration': 4.021}, {'end': 18605.231, 'text': "So let's go back to the app.js and do that very thing.", 'start': 18601.95, 'duration': 3.281}, {'end': 18607.172, 'text': "We've got our useState here.", 'start': 18605.651, 'duration': 1.521}, {'end': 18614.554, 'text': 'So inside the app function, we want to define both search and setSearch.', 'start': 18607.292, 'duration': 7.262}, {'end': 18618.615, 'text': 'And then we will set that equal to useState.', 'start': 18615.974, 'duration': 2.641}, {'end': 18623.056, 'text': 'And we need an empty array for those as we start out.', 'start': 18619.875, 'duration': 3.181}, {'end': 18625.216, 'text': "And we'll save that.", 'start': 18624.275, 'duration': 0.941}, {'end': 18626.377, 'text': "And I'm wrong.", 'start': 18625.236, 'duration': 1.141}, {'end': 18628.178, 'text': "I don't want to use an empty array there.", 'start': 18626.497, 'duration': 1.681}, {'end': 18630.139, 'text': 'I want to do that for the search results.', 'start': 18628.298, 'duration': 1.841}, {'end': 18632.641, 'text': 'For here, I just want to do an empty string.', 'start': 18630.239, 'duration': 2.402}], 'summary': 'Implemented functionality to navigate between different pages and set state for search and setsearch in app.js.', 'duration': 52.02, 'max_score': 18580.621, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go18580621.jpg'}, {'end': 18920.883, 'src': 'embed', 'start': 18892.093, 'weight': 3, 'content': [{'end': 18893.474, 'text': "It's blank, but that's fine.", 'start': 18892.093, 'duration': 1.381}, {'end': 18895.215, 'text': 'It will at least eliminate the error.', 'start': 18893.514, 'duration': 1.701}, {'end': 18902.018, 'text': "And now we'll go back to home and we need to import before we can eliminate that error.", 'start': 18895.935, 'duration': 6.083}, {'end': 18907.441, 'text': 'So import feed from dot slash feed.', 'start': 18902.078, 'duration': 5.363}, {'end': 18910.856, 'text': 'And now the error should go away.', 'start': 18909.355, 'duration': 1.501}, {'end': 18914.379, 'text': 'Yes, and we just have a blank page because feed is empty.', 'start': 18911.697, 'duration': 2.682}, {'end': 18916.44, 'text': 'It looks like we have something else.', 'start': 18914.719, 'duration': 1.721}, {'end': 18918.522, 'text': 'Oh, it says feed is not defined.', 'start': 18917.081, 'duration': 1.441}, {'end': 18920.883, 'text': "Let's go ahead and reload, and I think it'll be all right.", 'start': 18918.562, 'duration': 2.321}], 'summary': 'Troubleshooting code to import feed from dot slash feed, eliminating errors and reloading page.', 'duration': 28.79, 'max_score': 18892.093, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go18892093.jpg'}], 'start': 18156.914, 'title': 'Building blog app with react router and custom hooks', 'summary': 'Covers building a blog app using react router and custom hooks, adding a search bar to the navigation, creating navigation with react router dom, and building a react component to display posts.', 'chapters': [{'end': 18336.224, 'start': 18156.914, 'title': 'React router and custom hooks', 'summary': 'Discusses building a blog application using react router and custom hooks, including use history, and working with css for styling, while also making modifications to components such as header and nav.', 'duration': 179.31, 'highlights': ['The chapter focuses on building a blog application using React Router and custom hooks like use history. The tutorial will cover adding links, handling parameters from URLs, and working with use history to manage browser history.', 'CSS styling for the blog application is discussed, with guidance to experiment with different styles. The tutorial includes applying custom CSS to the blog application and encourages experimentation with different styles.', 'Modifications to components such as header and nav are made, with specific changes and attribute additions. Specific changes like passing title prop to header component and adding class name attribute to nav component are made.']}, {'end': 18495.945, 'start': 18336.224, 'title': 'Adding search bar to navigation', 'summary': 'Details the process of adding a search bar to the navigation, including setting attributes and event handling for the form and input elements, making the input controlled, and ensuring accessibility with a label.', 'duration': 159.721, 'highlights': ['The chapter details the process of adding a search bar to the navigation, including setting attributes and event handling for the form and input elements, making the input controlled, and ensuring accessibility with a label.', "The form in the navigation will have a class name attribute set to 'search form', and the nav itself will have a class name attribute set to 'nav'.", 'The input for the search bar will have attributes including an ID, type, placeholder, and value, with the value being equal to the passed-in search prop.', 'Event handling is implemented to make the input controlled, with an onSubmit function preventing the default behavior, and an onChange function updating the search state with the input value.']}, {'end': 18807.487, 'start': 18496.926, 'title': 'React router dom navigation', 'summary': 'Covers creating navigation using react router dom, importing links, setting up state with usestate, and hard coding posts as an array of objects.', 'duration': 310.561, 'highlights': ['Creating navigation using React Router DOM The chapter starts by creating navigation using React Router DOM, including importing links and setting up proper routing for different components.', 'Setting up state with useState The chapter demonstrates setting up state using useState, defining search and setSearch, posts, and set posts as arrays and empty strings.', 'Hard coding posts as an array of objects The chapter hard codes posts as an array of objects with properties including id, title, date time, and body, to be used as test data for the dev environment.']}, {'end': 19369.328, 'start': 18807.487, 'title': 'React post display', 'summary': 'Discusses building a react component to display posts, including creating the feed and post components, utilizing prop drilling, and implementing a post detail page with react router.', 'duration': 561.841, 'highlights': ['The chapter discusses building a React component to display posts The discussion centers on creating a feed component that receives posts, utilizing prop drilling, and implementing a post detail page with React Router.', 'Creating the feed and post components The process involves creating a feed component that maps through posts, creating a post component to display individual posts, and utilizing reusable components to handle post display.', 'Utilizing prop drilling and implementing a post detail page with React Router The approach involves passing props down through components using prop drilling and implementing a post detail page with React Router, including handling parameters to display individual posts.']}], 'duration': 1212.414, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go18156914.jpg', 'highlights': ['The chapter focuses on building a blog application using React Router and custom hooks like use history.', 'The tutorial includes applying custom CSS to the blog application and encourages experimentation with different styles.', 'The chapter details the process of adding a search bar to the navigation, including setting attributes and event handling for the form and input elements.', 'Creating navigation using React Router DOM, including importing links and setting up proper routing for different components.', 'The chapter discusses building a React component to display posts, creating a feed component that maps through posts, and implementing a post detail page with React Router.']}, {'end': 20396.547, 'segs': [{'end': 19434.01, 'src': 'embed', 'start': 19407.005, 'weight': 3, 'content': [{'end': 19415.339, 'text': "So let's say, if we have a post and then use the two ampersands, which is a way of saying okay, if the post is true,", 'start': 19407.005, 'duration': 8.334}, {'end': 19419.021, 'text': "essentially if it exists then we're going to display this.", 'start': 19415.339, 'duration': 3.682}, {'end': 19427.426, 'text': "And inside of our curly braces, after the ampersand, let's put a fragment once again.", 'start': 19420.061, 'duration': 7.365}, {'end': 19434.01, 'text': 'And so now that we have a fragment for the parent, we can put our other elements.', 'start': 19427.446, 'duration': 6.564}], 'summary': 'Using two ampersands to display a fragment if the post is true.', 'duration': 27.005, 'max_score': 19407.005, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go19407005.jpg'}, {'end': 19674.27, 'src': 'embed', 'start': 19651.774, 'weight': 0, 'content': [{'end': 19661.12, 'text': "But if we go ahead and request post number five that doesn't exist, we get our portion here where the post doesn't exist and it says post not found.", 'start': 19651.774, 'duration': 9.346}, {'end': 19662.161, 'text': "Well, that's disappointing.", 'start': 19661.16, 'duration': 1.001}, {'end': 19664.443, 'text': 'This is our homepage and the link works.', 'start': 19662.181, 'duration': 2.262}, {'end': 19667.945, 'text': "I'm going to press Control-B to show the file tree again.", 'start': 19665.103, 'duration': 2.842}, {'end': 19669.306, 'text': 'Go to app.js.', 'start': 19668.005, 'duration': 1.301}, {'end': 19674.27, 'text': 'And now we need to go ahead and finish defining our handle delete function.', 'start': 19670.007, 'duration': 4.263}], 'summary': "Requesting a non-existent post results in 'post not found' message. defining handle delete function in app.js.", 'duration': 22.496, 'max_score': 19651.774, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go19651774.jpg'}, {'end': 19748.987, 'src': 'embed', 'start': 19722.716, 'weight': 1, 'content': [{'end': 19733.412, 'text': "Now underneath where we set the use state, let's go ahead and hit return and we'll just say history is equal to use history.", 'start': 19722.716, 'duration': 10.696}, {'end': 19738.117, 'text': "And after we've defined that, we can use it inside of our handle delete function.", 'start': 19734.293, 'duration': 3.824}, {'end': 19744.463, 'text': "So we'll say history.push, and we'll just push in the route to the home page.", 'start': 19738.597, 'duration': 5.866}, {'end': 19748.987, 'text': 'And this will take us back to the home page once this is completed.', 'start': 19745.044, 'duration': 3.943}], 'summary': 'Set history to use history for navigation, pushing to the home page.', 'duration': 26.271, 'max_score': 19722.716, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go19722716.jpg'}, {'end': 20132.019, 'src': 'embed', 'start': 20099.113, 'weight': 2, 'content': [{'end': 20101.875, 'text': 'The ID will be post body.', 'start': 20099.113, 'duration': 2.762}, {'end': 20107.34, 'text': "We don't need to set the type as a text area is text, doesn't have that attribute.", 'start': 20102.096, 'duration': 5.244}, {'end': 20109.001, 'text': 'We can make it required.', 'start': 20107.72, 'duration': 1.281}, {'end': 20111.864, 'text': "And then let's make this a controlled input as well.", 'start': 20109.622, 'duration': 2.242}, {'end': 20116.728, 'text': 'So the value is going to be the post body that we received as a prop.', 'start': 20111.964, 'duration': 4.764}, {'end': 20119.13, 'text': 'And then we need to put it on change.', 'start': 20117.408, 'duration': 1.722}, {'end': 20122.672, 'text': 'Set that equal to, once again, an anonymous function.', 'start': 20119.77, 'duration': 2.902}, {'end': 20132.019, 'text': "And inside the function, we'll have set post body and have that be e.target.value.", 'start': 20123.493, 'duration': 8.526}], 'summary': 'Set post body as a controlled input, making it required and using the received post body as the value.', 'duration': 32.906, 'max_score': 20099.113, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go20099113.jpg'}, {'end': 20403.069, 'src': 'embed', 'start': 20371.458, 'weight': 4, 'content': [{'end': 20374.139, 'text': 'So as you might guess, we have month, date, year.', 'start': 20371.458, 'duration': 2.681}, {'end': 20379.781, 'text': "And then we're using PP, and this is going to specify a time.", 'start': 20374.779, 'duration': 5.002}, {'end': 20382.822, 'text': "I'm not for sure why they use that format, but that's what it is.", 'start': 20380.041, 'duration': 2.781}, {'end': 20385.823, 'text': 'You can look up this package at NPM.', 'start': 20382.862, 'duration': 2.961}, {'end': 20396.547, 'text': 'or npmjs.org, I believe, to get the details on the date-fns package, but this is what I pulled out for this project.', 'start': 20387.844, 'duration': 8.703}, {'end': 20403.069, 'text': "Okay, now that we have that and we're defining the date in the format that we want it, we need to create our new post.", 'start': 20397.107, 'duration': 5.962}], 'summary': 'Using date-fns package to define date in desired format for new post', 'duration': 31.611, 'max_score': 20371.458, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go20371458.jpg'}], 'start': 19369.988, 'title': 'React post handling', 'summary': "Covers adding a delete button, defining handle delete, and redirecting to the home page using react router's usehistory hook, resulting in successful post deletion and redirection.", 'chapters': [{'end': 19468.563, 'start': 19369.988, 'title': 'Creating jsx post display', 'summary': 'Covers the process of creating a jsx post display with specific class names for elements, conditional rendering based on the existence of a post, and the inclusion of post title, date, and body.', 'duration': 98.575, 'highlights': ['Setting class names for JSX elements like post page and post, and conditional rendering based on the existence of a post.', 'Inclusion of post title using H2 and post date and body using paragraph tags, with specific class names.', 'Explanation of using two ampersands to check the existence of a post for conditional rendering.']}, {'end': 19968.429, 'start': 19469.404, 'title': 'React post handling', 'summary': "Covers adding a delete button that triggers a handle delete function, defining handle delete to filter out the post to be deleted and redirecting to the home page using react router's usehistory hook, resulting in successful post deletion and redirection.", 'duration': 499.025, 'highlights': ['Adding Handle Delete Function Defined handle delete function to filter out the post to be deleted by its ID, resulting in successful post deletion and immediate redirection to the home page.', 'Creating New State for New Post Component Created new state for post title and body, to be passed as props along with handle submit function to the new post component, facilitating new post submission.', "Implementing Delete Button and Handling Post Deletion Implemented a delete button that triggers the handle delete function, resulting in successful post deletion and immediate redirection to the home page using react router's useHistory hook.", "Handling Post Not Found Scenario Handled the scenario of a non-existent post by displaying 'post not found' and providing a link to the homepage using useParams from React Router, ensuring a user-friendly experience.", 'Defining New Post Component Defined a new post component and passed necessary props such as handle submit, post title, post body, set post title, and set post body, enabling the submission of new posts.']}, {'end': 20396.547, 'start': 19968.609, 'title': 'Adding form in jsx for new post submission', 'summary': 'Explains adding a form in jsx for submitting a new post, including setting up controlled inputs, defining handle submit function, and importing the date-fns package for date formatting.', 'duration': 427.938, 'highlights': ['Setting up a form in JSX for new post submission Explains the process of adding a form in JSX for submitting a new post, including setting up controlled inputs and defining handle submit function.', 'Defining handle submit function and setting post ID Details the process of defining the handle submit function, setting post ID based on existing posts, and importing the date-fns package for date formatting.', 'Importing date-fns package for date formatting Explains the process of importing the date-fns package for date formatting and using the format function to define the date time value.']}], 'duration': 1026.559, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go19369988.jpg', 'highlights': ['Adding Handle Delete Function Defined handle delete function to filter out the post to be deleted by its ID, resulting in successful post deletion and immediate redirection to the home page.', "Implementing Delete Button and Handling Post Deletion Implemented a delete button that triggers the handle delete function, resulting in successful post deletion and immediate redirection to the home page using react router's useHistory hook.", "Handling Post Not Found Scenario Handled the scenario of a non-existent post by displaying 'post not found' and providing a link to the homepage using useParams from React Router, ensuring a user-friendly experience.", 'Defining New Post Component Defined a new post component and passed necessary props such as handle submit, post title, post body, set post title, and set post body, enabling the submission of new posts.', 'Setting up a form in JSX for new post submission Explains the process of adding a form in JSX for submitting a new post, including setting up controlled inputs and defining handle submit function.']}, {'end': 21711.789, 'segs': [{'end': 20528.868, 'src': 'embed', 'start': 20499.959, 'weight': 0, 'content': [{'end': 20502.08, 'text': 'And our app is back up and running.', 'start': 20499.959, 'duration': 2.121}, {'end': 20504.561, 'text': "Let's close out the extra tabs we have.", 'start': 20502.14, 'duration': 2.421}, {'end': 20507.502, 'text': 'And this is the current one where our app is now running.', 'start': 20504.681, 'duration': 2.821}, {'end': 20509.762, 'text': 'Now notice we got a warning here.', 'start': 20508.022, 'duration': 1.74}, {'end': 20514.564, 'text': "Search results and set search results are assigned values, but they're not yet used.", 'start': 20509.842, 'duration': 4.722}, {'end': 20518.925, 'text': 'So we need to go ahead and make the functionality for our search bar work.', 'start': 20514.904, 'duration': 4.021}, {'end': 20520.146, 'text': "Let's close the terminal.", 'start': 20518.985, 'duration': 1.161}, {'end': 20522.767, 'text': "And we'll scroll up just a little bit here.", 'start': 20520.606, 'duration': 2.161}, {'end': 20527.168, 'text': 'And we can see search results and set search results have not been used yet.', 'start': 20522.847, 'duration': 4.321}, {'end': 20528.868, 'text': 'Right now, they are using state.', 'start': 20527.288, 'duration': 1.58}], 'summary': 'App is up and running, but search functionality needs to be implemented.', 'duration': 28.909, 'max_score': 20499.959, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go20499959.jpg'}, {'end': 20600.628, 'src': 'embed', 'start': 20569.557, 'weight': 3, 'content': [{'end': 20578.342, 'text': 'And so now, as our search input provides new data, we could go ahead and provide new data here for the searches.', 'start': 20569.557, 'duration': 8.785}, {'end': 20584.726, 'text': 'We can essentially filter the posts that we have down to what matches our search.', 'start': 20578.402, 'duration': 6.324}, {'end': 20586.828, 'text': "And so that's why those are both dependencies.", 'start': 20584.846, 'duration': 1.982}, {'end': 20600.628, 'text': "We're going to define something here called filteredResults, and we'll set this equal to the posts.filter And now we can just say for each post.", 'start': 20587.188, 'duration': 13.44}], 'summary': 'New data input allows filtering posts for search results.', 'duration': 31.071, 'max_score': 20569.557, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go20569557.jpg'}, {'end': 21197.283, 'src': 'embed', 'start': 21145.001, 'weight': 1, 'content': [{'end': 21148.189, 'text': 'When I click on About, It even gets wider.', 'start': 21145.001, 'duration': 3.188}, {'end': 21154.752, 'text': 'So really the application is changing based on the content size in the main area.', 'start': 21148.449, 'duration': 6.303}, {'end': 21157.013, 'text': "But let's look at the CSS I have.", 'start': 21155.212, 'duration': 1.801}, {'end': 21158.894, 'text': "I'm importing a font at the top.", 'start': 21157.073, 'duration': 1.821}, {'end': 21160.275, 'text': "I've got my reset.", 'start': 21159.034, 'duration': 1.241}, {'end': 21164.437, 'text': "I've set a default font size here in the HTML element.", 'start': 21160.815, 'duration': 3.622}, {'end': 21167.798, 'text': "And then in the body, I've set a min height of 100 units.", 'start': 21164.997, 'duration': 2.801}, {'end': 21174.183, 'text': "And so it's at least the full height of the visible browser here.", 'start': 21169.259, 'duration': 4.924}, {'end': 21179.508, 'text': "But then there's the app component and we have the app class and the width is set to 100%.", 'start': 21174.764, 'duration': 4.744}, {'end': 21186.713, 'text': "As we look at the header and the footer, they're also set to 100% width here on line 37.", 'start': 21179.508, 'duration': 7.205}, {'end': 21194.319, 'text': "And it's the same for the nav menu and all of the main elements that we change out here with different classes.", 'start': 21186.713, 'duration': 7.606}, {'end': 21197.283, 'text': "And they're all set to 100%.", 'start': 21195.16, 'duration': 2.123}], 'summary': "The application's layout adjusts based on content size, with css defining font, height, and width settings for various elements.", 'duration': 52.282, 'max_score': 21145.001, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go21145001.jpg'}], 'start': 20397.107, 'title': 'React app development, functionality, and testing', 'summary': 'Covers the process of creating and submitting new posts, react app development with search functionality, completion and testing of react components, and setting height and width in react, offering a comprehensive guide to various aspects of react app development, including specific steps, functionalities, and issue resolution.', 'chapters': [{'end': 20476.388, 'start': 20397.107, 'title': 'Creating and submitting new posts', 'summary': 'Outlines the process of creating and submitting a new post, including defining the post format, setting the post id, specifying the title and body, updating the list of all posts, and navigating back to the homepage, emphasizing the need to clear input fields and access the history after submission.', 'duration': 79.281, 'highlights': ['The process involves defining the date format, creating a new post, specifying the post ID, title, and date time, as well as updating the post body and managing the list of all posts.', 'After submitting the new post, the input fields for post title and body are set back to empty strings, and the history is accessed to navigate back to the homepage.', 'A new array is created to store all posts, which includes the new post and the existing posts in the state, and then the state is updated with the new posts.', 'The chapter emphasizes the importance of clearing input fields for post title and body after submitting a new post, ensuring a seamless process for creating subsequent posts.']}, {'end': 20861.943, 'start': 20476.388, 'title': 'React app development and search functionality', 'summary': 'Covers the development of a react app, including the installation of a date time dependency, addressing warnings, implementing search functionality using useeffect, filtering and displaying search results, and resolving issues with adding new posts and updating the display order, leading to successful functionality and error resolution.', 'duration': 385.555, 'highlights': ['Implemented search functionality using useEffect and filter to match search input with post titles and bodies, resulting in successful search results and reverse display order. Implemented search functionality using useEffect and filter to match search input with post titles and bodies, resulting in successful search results and reverse display order.', 'Resolved issue with adding new posts by correcting the structure to place posts inside an array, ensuring successful addition and display of new posts. Resolved issue with adding new posts by correcting the structure to place posts inside an array, ensuring successful addition and display of new posts.', 'Installed date time dependency and addressed warning related to unused search results, leading to successful app functionality and user interface improvement. Installed date time dependency and addressed warning related to unused search results, leading to successful app functionality and user interface improvement.']}, {'end': 21070.657, 'start': 20861.983, 'title': 'React component completion and testing', 'summary': "Covers the completion of three remaining components (about, missing, and footer) in the react app, including adding functionality and testing, with a note on static post loading and footer visibility. the missing component is updated to display 'page not found' and link back to the homepage, the footer component is modified to display the current year, and the about component is filled with content.", 'duration': 208.674, 'highlights': ["The missing component is updated to display 'page not found' and link back to the homepage The missing component is updated to display 'page not found' instead of 'post not found' and includes a link back to the homepage, allowing users to navigate back easily.", "Static post loading and footer visibility are noted during testing It's noted that static posts load when the app reloads after visiting the missing page, and the footer is observed to be initially hidden but becomes fully visible upon expanding the page.", 'The footer component is modified to display the current year The footer component is updated to display the current year dynamically by defining the current date and referencing it in the copyright section.', 'The about component is filled with content The about component is filled with content, including changing the title to H2, adding a class name, and providing a brief statement about the project, making the about page fully functional.']}, {'end': 21711.789, 'start': 21070.657, 'title': 'Setting height and width in react', 'summary': 'Discusses setting the height and width of a react application, utilizing flexbox to address width inconsistencies and explaining the use of viewport units to control the height, with a focus on achieving consistent and centered layout throughout the application.', 'duration': 641.132, 'highlights': ['Using Flexbox to address width inconsistencies in React applications Demonstrates setting width using Flexbox, addressing width inconsistencies caused by the structure of React applications, and explaining the need to consider the container with the ID of root.', 'Implementing viewport units to control the height of a React application Explains the usage of viewport units to set the height of the app component, showcasing the impact on the layout and the necessity of setting a consistent height for the application.', 'Utilizing Flex Grow property to achieve consistent layout and expansion of elements Illustrates the use of Flex Grow property to ensure consistent layout and expansion of elements, exemplifying its application to various classes within the app component for consistent growth and layout.']}], 'duration': 1314.682, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go20397107.jpg', 'highlights': ['The process involves defining the date format, creating a new post, specifying the post ID, title, and date time, as well as updating the post body and managing the list of all posts.', 'Implemented search functionality using useEffect and filter to match search input with post titles and bodies, resulting in successful search results and reverse display order.', 'Using Flexbox to address width inconsistencies in React applications Demonstrates setting width using Flexbox, addressing width inconsistencies caused by the structure of React applications, and explaining the need to consider the container with the ID of root.', "The missing component is updated to display 'page not found' and link back to the homepage The missing component is updated to display 'page not found' instead of 'post not found' and includes a link back to the homepage, allowing users to navigate back easily."]}, {'end': 24937.485, 'segs': [{'end': 21937.673, 'src': 'embed', 'start': 21909.714, 'weight': 0, 'content': [{'end': 21912.196, 'text': 'In Windows, I press Control and the back tick.', 'start': 21909.714, 'duration': 2.482}, {'end': 21920.462, 'text': 'You could also go to the terminal menu at the top of Visual Studio Code to do that as well and get rid of the Help menu there that I opened by mistake.', 'start': 21912.636, 'duration': 7.826}, {'end': 21923.464, 'text': 'And now we can install Axios as a dependency.', 'start': 21920.962, 'duration': 2.502}, {'end': 21927.826, 'text': "So I'll type npm i and then Axios.", 'start': 21923.544, 'duration': 4.282}, {'end': 21931.409, 'text': 'And dash s is a habit of mine.', 'start': 21928.467, 'duration': 2.942}, {'end': 21934.531, 'text': "It's actually not required because it will save it by default.", 'start': 21931.529, 'duration': 3.002}, {'end': 21937.673, 'text': 'And it will save it as a production dependency.', 'start': 21935.091, 'duration': 2.582}], 'summary': 'Installing axios as a production dependency using npm i in visual studio code.', 'duration': 27.959, 'max_score': 21909.714, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go21909714.jpg'}, {'end': 22561.21, 'src': 'embed', 'start': 22531.012, 'weight': 2, 'content': [{'end': 22535.154, 'text': 'So we can pull out extra data if we need to, and we can define between those.', 'start': 22531.012, 'duration': 4.142}, {'end': 22545.578, 'text': 'All of that said, our function for fetch posts is now defined, but what we still need to do is call fetch posts here inside of the use effects.', 'start': 22535.534, 'duration': 10.044}, {'end': 22546.639, 'text': "So let's save this.", 'start': 22545.638, 'duration': 1.001}, {'end': 22551.782, 'text': 'And now we have our posts once again over here on the right.', 'start': 22548.379, 'duration': 3.403}, {'end': 22556.326, 'text': 'And so our use effect works as soon as the page loads.', 'start': 22552.583, 'duration': 3.743}, {'end': 22561.21, 'text': 'And of course, our development server loaded the page as soon as we saved our changes.', 'start': 22556.466, 'duration': 4.744}], 'summary': 'Function for fetching posts is defined and called inside useeffect, resulting in successful page load.', 'duration': 30.198, 'max_score': 22531.012, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go22531012.jpg'}, {'end': 22703.582, 'src': 'embed', 'start': 22678.531, 'weight': 1, 'content': [{'end': 22685.613, 'text': "And then we need to define the endpoint posts and then we're going to pass in the new post, and that is the data we're sending.", 'start': 22678.531, 'duration': 7.082}, {'end': 22689.174, 'text': "After that, well, we don't need a new line.", 'start': 22686.253, 'duration': 2.921}, {'end': 22691.655, 'text': "Let's just look at all posts because we need to alter that.", 'start': 22689.214, 'duration': 2.441}, {'end': 22700.439, 'text': "We're going to take all the posts we had previously, and now instead of the new post here, We're going to use the response.data.", 'start': 22692.075, 'duration': 8.364}, {'end': 22703.582, 'text': 'This should be the same as the new post, actually.', 'start': 22700.939, 'duration': 2.643}], 'summary': 'Defining endpoint posts, passing new post data, and replacing with response data.', 'duration': 25.051, 'max_score': 22678.531, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go22678531.jpg'}, {'end': 23510.182, 'src': 'embed', 'start': 23482.848, 'weight': 5, 'content': [{'end': 23486.691, 'text': "So that's why JSX and Visual Studio Code would not accept that.", 'start': 23482.848, 'duration': 3.843}, {'end': 23490.253, 'text': "Now that we've done that, let's change this new post title to Edit Post.", 'start': 23487.171, 'duration': 3.082}, {'end': 23493.815, 'text': "And let's go ahead and update the form a little bit.", 'start': 23491.474, 'duration': 2.341}, {'end': 23497.036, 'text': 'We can keep the same class name here, new post form.', 'start': 23493.875, 'duration': 3.161}, {'end': 23500.158, 'text': 'We want the same formatting from CSS.', 'start': 23497.076, 'duration': 3.082}, {'end': 23503.479, 'text': 'But handle submit will not be called an on submit.', 'start': 23500.518, 'duration': 2.961}, {'end': 23510.182, 'text': 'Instead here, we will prevent default, as we often do with the form.', 'start': 23503.579, 'duration': 6.603}], 'summary': 'Jsx and visual studio code issues resolved. updated post title and form. replaced handle submit with on submit.', 'duration': 27.334, 'max_score': 23482.848, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go23482848.jpg'}, {'end': 23701.781, 'src': 'embed', 'start': 23674.821, 'weight': 3, 'content': [{'end': 23683.829, 'text': 'and there is the chance that a post will not exist and that the page could be requested, we need to go ahead and update this.', 'start': 23674.821, 'duration': 9.008}, {'end': 23685.23, 'text': "And this shouldn't be post title.", 'start': 23683.849, 'duration': 1.381}, {'end': 23687.292, 'text': 'This should be edit title.', 'start': 23685.25, 'duration': 2.042}, {'end': 23695.057, 'text': 'But here this says if we do not have a title, essentially, if the post does not exist, we need to pass in our post.', 'start': 23687.472, 'duration': 7.585}, {'end': 23701.781, 'text': 'not found information here, which is where we use the React Router link to go back to the home page.', 'start': 23695.057, 'duration': 6.724}], 'summary': 'Update post title to edit title if post does not exist', 'duration': 26.96, 'max_score': 23674.821, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go23674821.jpg'}, {'end': 24429.035, 'src': 'embed', 'start': 24394.912, 'weight': 4, 'content': [{'end': 24396.492, 'text': "So we'll get those initial values.", 'start': 24394.912, 'duration': 1.58}, {'end': 24403.774, 'text': 'So how will we get the values to continue to adjust when the window is resized??', 'start': 24396.572, 'duration': 7.202}, {'end': 24407.814, 'text': "Well, we'll do that with an event listener, like we would in regular old JavaScript.", 'start': 24403.934, 'duration': 3.88}, {'end': 24409.835, 'text': "So we'll add an event listener to the window.", 'start': 24407.854, 'duration': 1.981}, {'end': 24419.358, 'text': "window.addEventListener, and we'll listen for the resize event, and then we'll handle the resize, call that function into action.", 'start': 24410.868, 'duration': 8.49}, {'end': 24429.035, 'text': "And that's essentially what we need to get those values every time, because we added this listener at the beginning with useEffect when it was loaded,", 'start': 24420.768, 'duration': 8.267}], 'summary': 'Using an event listener to adjust values on window resize.', 'duration': 34.123, 'max_score': 24394.912, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go24394912.jpg'}], 'start': 21711.789, 'title': 'Using axios and custom hooks in react apps', 'summary': 'Discusses integrating axios in a reactjs blog app, utilizing axios in visual studio code, and creating a custom hook for obtaining browser window size. it emphasizes crud operations, error handling, and successful edit functionality in the development application.', 'chapters': [{'end': 21754.515, 'start': 21711.789, 'title': 'Centering elements in react apps', 'summary': 'Discusses how to center elements in react apps using flexbox and grid display, emphasizing the importance of consistent width and layout when using react router.', 'duration': 42.726, 'highlights': ['Flexbox and grid display can be used to easily center elements in React apps, providing flexibility in layout design and ensuring consistent width across different pages with React Router.', 'Consistent width is essential when working with React Router to maintain a uniform layout across different pages, preventing changes in width based on the page being accessed.']}, {'end': 22141.804, 'start': 21756.169, 'title': 'Integrating axios in reactjs blog app', 'summary': 'Covers integrating the axios package into a reactjs blog application to request data from a development api, setting up json server, adding axios as a new dependency, and launching json server and react app.', 'duration': 385.635, 'highlights': ['Integrating Axios package to request data from a development API and setting up JSON Server The tutorial covers adding the Axios package to a ReactJS blog application to request data from a development API, setting up JSON Server, and launching JSON server and React app.', 'Adding axios as a new dependency The tutorial demonstrates adding axios as a new dependency to the project, which is reflected in the package.json file after installation.', 'Setting the base URL for axios throughout the project The chapter explains setting the base URL for axios throughout the project to HTTP://localhost:3500 for the JSON server.']}, {'end': 22654.165, 'start': 22141.804, 'title': 'Using axios in visual studio code', 'summary': 'Demonstrates how to import and use axios in a visual studio code project to fetch data from an api, handling errors and setting up the fetch posts and handle submit functions.', 'duration': 512.361, 'highlights': ['Importing and using Axios in Visual Studio Code The chapter starts by demonstrating the process of importing the API and using Axios in a Visual Studio Code project to fetch data from an API.', 'Setting up the fetch posts function The chapter explains the process of setting up the fetch posts function to fetch data from the API, utilizing Axios and handling errors.', 'Setting up the handle submit function for creating new posts The chapter details the setup of the handle submit function for creating new posts, using Axios to handle errors and log error messages.']}, {'end': 23099.246, 'start': 22654.346, 'title': 'Crud operations in development application', 'summary': 'Discusses the implementation of crud operations in a development application using axios, including the use of post, get, delete, and put methods to interact with the backend api and update the state. it also covers the use of async/await, controlled forms, and the handling of data responses.', 'duration': 444.9, 'highlights': ['The chapter discusses the implementation of CRUD operations in a development application using Axios, including the use of POST, GET, DELETE, and PUT methods to interact with the backend API and update the state.', 'It covers the use of async/await for handling asynchronous operations when making API calls, ensuring that the response is received before proceeding with further actions.', 'The explanation includes the use of controlled forms to manage input fields for creating, updating, and deleting posts within the application.', 'It also discusses the use of specific HTTP methods such as POST and PUT to create new posts and update existing posts by sending data to the backend API.']}, {'end': 23909.89, 'start': 23099.907, 'title': 'Adding edit functionality to post component', 'summary': 'Discusses the process of creating an edit component and its pathway, including importing dependencies, setting state, creating the route, and implementing the edit functionality, resulting in successful editing and error-free application.', 'duration': 809.983, 'highlights': ['The chapter discusses the process of creating an edit component and its pathway, including importing dependencies, setting state, creating the route, and implementing the edit functionality, resulting in successful editing and error-free application.', 'The function is a combination of the new post page and the post detail page, involving the use of useParams and setting post detail from a parameter.', 'The use of useEffect to pull in data and set the state for editing existing posts, ensuring the form is filled out and ready for editing.', 'The addition of the edit button to the post page, allowing users to directly access the edit page and successfully edit posts.']}, {'end': 24937.485, 'start': 23910.53, 'title': 'React custom hooks tutorial', 'summary': "Details the creation of a custom hook 'usewindowsize' for obtaining the browser window size, and its integration into the react application, resulting in the dynamic display of different icons based on the window width, with successful testing across various devices.", 'duration': 1026.955, 'highlights': ["The custom hook 'useWindowSize' is created to obtain the browser window size using useState and useEffect, allowing for the dynamic display of different icons based on the window width. The tutorial guides the creation of the 'useWindowSize' custom hook, utilizing useState and useEffect to track and update the browser window size, enabling dynamic icon display based on the width.", "The hook is integrated into the React application to dynamically change the displayed icon based on the window width, with successful testing across various device sizes, including laptop, tablet, and mobile phone. The 'useWindowSize' custom hook is seamlessly integrated into the React application, enabling the dynamic change of displayed icons based on the window width, successfully tested across different device sizes, ensuring a responsive user interface."]}], 'duration': 3225.696, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go21711789.jpg', 'highlights': ['The chapter discusses the implementation of CRUD operations in a development application using Axios, including the use of POST, GET, DELETE, and PUT methods to interact with the backend API and update the state.', "The custom hook 'useWindowSize' is created to obtain the browser window size using useState and useEffect, allowing for the dynamic display of different icons based on the window width.", 'The chapter discusses the process of creating an edit component and its pathway, including importing dependencies, setting state, creating the route, and implementing the edit functionality, resulting in successful editing and error-free application.', 'Integrating Axios package to request data from a development API and setting up JSON Server The tutorial covers adding the Axios package to a ReactJS blog application to request data from a development API, setting up JSON Server, and launching JSON server and React app.', 'The chapter starts by demonstrating the process of importing the API and using Axios in a Visual Studio Code project to fetch data from an API.', 'Flexbox and grid display can be used to easily center elements in React apps, providing flexibility in layout design and ensuring consistent width across different pages with React Router.']}, {'end': 26829.381, 'segs': [{'end': 25068.607, 'src': 'embed', 'start': 25043.397, 'weight': 5, 'content': [{'end': 25048.523, 'text': 'And if you see a return at the end of the use effect, that is exactly what it is.', 'start': 25043.397, 'duration': 5.126}, {'end': 25051.327, 'text': 'it is a cleanup function and it removes the event listener.', 'start': 25048.523, 'duration': 2.804}, {'end': 25059.178, 'text': 'so this accomplishes the same thing, just a little refactor, not to be confused with the return at the end of our custom hook.', 'start': 25051.327, 'duration': 7.851}, {'end': 25061.902, 'text': 'but this one is inside of the use effect.', 'start': 25059.178, 'duration': 2.724}, {'end': 25068.607, 'text': "Okay, now that we have added a simple custom hook and if you search those links I've given in the description below,", 'start': 25062.663, 'duration': 5.944}], 'summary': 'The transcript discusses using a cleanup function in a custom hook inside a use effect.', 'duration': 25.21, 'max_score': 25043.397, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go25043397.jpg'}, {'end': 25148.746, 'src': 'embed', 'start': 25115.854, 'weight': 1, 'content': [{'end': 25117.896, 'text': 'And these are from React.', 'start': 25115.854, 'duration': 2.042}, {'end': 25124.903, 'text': "And then I'm also going to import Axios from Axios.", 'start': 25119.077, 'duration': 5.826}, {'end': 25131.009, 'text': "And now we'll define const use Axios fetch.", 'start': 25126.464, 'duration': 4.545}, {'end': 25135.974, 'text': "This will be an arrow function, and it will accept what I'll call a data URL.", 'start': 25132.03, 'duration': 3.944}, {'end': 25143.024, 'text': "Now inside this function, we're going to have several pieces of state here.", 'start': 25139.383, 'duration': 3.641}, {'end': 25148.746, 'text': 'And here, instead of saying posts, we want this to be generic so we could use it in another applications.', 'start': 25143.284, 'duration': 5.462}], 'summary': 'Imported react and axios, defined const use axios fetch function, and aimed for generic use.', 'duration': 32.892, 'max_score': 25115.854, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go25115854.jpg'}, {'end': 25544.565, 'src': 'embed', 'start': 25452.15, 'weight': 0, 'content': [{'end': 25458.717, 'text': 'And remember, the hook receives a data URL as the actual parameter.', 'start': 25452.15, 'duration': 6.567}, {'end': 25461.099, 'text': 'So the data URL is what will pass in.', 'start': 25458.817, 'duration': 2.282}, {'end': 25468.126, 'text': 'In the definition, we used URL, but above, it actually receives the data URL.', 'start': 25461.519, 'duration': 6.607}, {'end': 25470.448, 'text': "So that's what we will call fetch data with.", 'start': 25468.166, 'duration': 2.282}, {'end': 25481.453, 'text': "After we call fetch data, let's once again go ahead and define a cleanup here camel case cleanup, equal parentheses,", 'start': 25472.208, 'duration': 9.245}, {'end': 25485.335, 'text': "arrow function and we'll say console.log.", 'start': 25481.453, 'duration': 3.882}, {'end': 25489.737, 'text': "here we'll just say cleanup function.", 'start': 25485.335, 'duration': 4.402}, {'end': 25490.778, 'text': "so we know it's running.", 'start': 25489.737, 'duration': 1.041}, {'end': 25501.114, 'text': "After the cleanup function, we'll set the isMounted to false, and we'll cancel the request.", 'start': 25491.618, 'duration': 9.496}, {'end': 25504.736, 'text': 'And if the request is already completed, no harm, no foul.', 'start': 25501.194, 'duration': 3.542}, {'end': 25510.838, 'text': 'But this will only run, once again, whenever a dependency changes for the useEffect.', 'start': 25505.236, 'duration': 5.602}, {'end': 25515.981, 'text': "With that definition completed, let's go ahead and return the cleanup function.", 'start': 25510.999, 'duration': 4.982}, {'end': 25520.803, 'text': 'And now we want to set the dependencies for useEffect as well.', 'start': 25516.841, 'duration': 3.962}, {'end': 25532.462, 'text': 'And the dependency here will be the data URL that is passed in to the useEffect or actually passed in to the custom hook we have.', 'start': 25522.039, 'duration': 10.423}, {'end': 25534.442, 'text': 'useAxiosFetch is the data URL.', 'start': 25532.462, 'duration': 1.98}, {'end': 25538.744, 'text': 'But then if that changes, we once again want to run useEffect.', 'start': 25534.522, 'duration': 4.222}, {'end': 25540.664, 'text': "So we'll put that in as the dependency.", 'start': 25538.784, 'duration': 1.88}, {'end': 25544.565, 'text': 'With that complete, we can return three things from our custom hook.', 'start': 25540.904, 'duration': 3.661}], 'summary': 'Custom hook uses data url as parameter, sets ismounted to false, and sets dependencies for useeffect.', 'duration': 92.415, 'max_score': 25452.15, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go25452150.jpg'}, {'end': 25724.15, 'src': 'embed', 'start': 25669.493, 'weight': 2, 'content': [{'end': 25676.697, 'text': "I'm going to show the file tree quickly just because I want to go to app.js where we can actually apply our custom hook.", 'start': 25669.493, 'duration': 7.204}, {'end': 25679.279, 'text': 'And the first thing we need to do is import it.', 'start': 25677.277, 'duration': 2.002}, {'end': 25684.782, 'text': 'So underneath our import of use window size, we can import use Axios fetch.', 'start': 25679.399, 'duration': 5.383}, {'end': 25688.865, 'text': 'And this will be from dot slash hooks slash.', 'start': 25685.182, 'duration': 3.683}, {'end': 25692.786, 'text': 'and then use axios fetch.', 'start': 25689.725, 'duration': 3.061}, {'end': 25696.128, 'text': 'there it is and we can save that much.', 'start': 25692.786, 'duration': 3.342}, {'end': 25712.815, 'text': "but after our import we need to come down to where we've defined the width and use window size and just underneath that we can set const then equal to and we can destructure what we're receiving from axios fetch.", 'start': 25696.128, 'duration': 16.687}, {'end': 25715.796, 'text': "and we've got the data.", 'start': 25712.815, 'duration': 2.981}, {'end': 25720.047, 'text': 'the fetch error and is loading.', 'start': 25715.796, 'duration': 4.251}, {'end': 25724.15, 'text': "And now let's go ahead and hide the file tree so we have some more room.", 'start': 25720.067, 'duration': 4.083}], 'summary': 'Demonstration of importing and using custom hooks in app.js, including axios fetching and data handling.', 'duration': 54.657, 'max_score': 25669.493, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go25669493.jpg'}, {'end': 26672.032, 'src': 'heatmap', 'start': 26346.877, 'weight': 0.81, 'content': [{'end': 26354.023, 'text': "From there, say export const, and we'll define our data provider that will provide the data to our different components.", 'start': 26346.877, 'duration': 7.146}, {'end': 26359.147, 'text': "And here we'll have a parentheses, and then inside is a destructured children.", 'start': 26354.884, 'duration': 4.263}, {'end': 26364.372, 'text': 'And this will refer to the components that are within the data provider.', 'start': 26359.428, 'duration': 4.944}, {'end': 26369.236, 'text': 'And then the data will be available to the children of the data provider.', 'start': 26364.672, 'duration': 4.564}, {'end': 26375.181, 'text': "So now that we have defined our data provider, let's go ahead and put a return statement in it.", 'start': 26369.976, 'duration': 5.205}, {'end': 26383.898, 'text': "and inside the return we'll have a data context dot provider, and here we'll have a value.", 'start': 26376.673, 'duration': 7.225}, {'end': 26393.685, 'text': "And now two curly braces, and I'm going to go ahead and press enter to have an extra line, and then we can close this out with a greater than symbol.", 'start': 26384.699, 'duration': 8.986}, {'end': 26396.406, 'text': "But this is where we'll put the different values.", 'start': 26394.285, 'duration': 2.121}, {'end': 26398.948, 'text': "What have been props that we've been passing down.", 'start': 26396.506, 'duration': 2.442}, {'end': 26412.135, 'text': 'we can now pass through the data context dot provider and our data provider will provide it to the different components as we request them with the use context hook.', 'start': 26398.948, 'duration': 13.187}, {'end': 26414.156, 'text': "We'll add all of that in just a minute.", 'start': 26412.175, 'duration': 1.981}, {'end': 26418.318, 'text': "Right now, let's finish this and here we need to have children in the JSX.", 'start': 26414.196, 'duration': 4.122}, {'end': 26424.702, 'text': 'After that, we need to close out the data context dot provider in the JSX.', 'start': 26419.199, 'duration': 5.503}, {'end': 26434.95, 'text': 'We can save that much and I have that formatted, but we still need export default data context here at the bottom.', 'start': 26424.822, 'duration': 10.128}, {'end': 26440.074, 'text': 'After we save that, we really have our skeleton for our data context.', 'start': 26436.111, 'duration': 3.963}, {'end': 26445.838, 'text': 'We need to move state and anything else we want in here that we will provide through the data provider.', 'start': 26440.114, 'duration': 5.724}, {'end': 26454.485, 'text': "Let's go back to the app.js and now we need to import our data provider.", 'start': 26446.058, 'duration': 8.427}, {'end': 26461.734, 'text': 'And this will come from dot slash our new context folder.', 'start': 26455.647, 'duration': 6.087}, {'end': 26471.456, 'text': 'and inside the context folder is the data context, and now we can use the data provider to provide data to any of these components.', 'start': 26462.728, 'duration': 8.728}, {'end': 26477.022, 'text': "right now, of course, it's still a little large here, as we have all the different props that we're drilling down.", 'start': 26471.456, 'duration': 5.566}, {'end': 26486.27, 'text': 'we will clean this up in a little bit, but what i want to do is just essentially put the data provider here around all of the components,', 'start': 26477.022, 'duration': 9.248}, {'end': 26493.543, 'text': 'And then the components within can subscribe at will to the data provider.', 'start': 26487.171, 'duration': 6.372}, {'end': 26497.55, 'text': "Now that we have that, I'm just going to highlight everything and tab them in.", 'start': 26494.384, 'duration': 3.166}, {'end': 26503.224, 'text': 'because the data provider would be a parent to all of the components within.', 'start': 26498.882, 'duration': 4.342}, {'end': 26504.685, 'text': 'And we can save that.', 'start': 26503.784, 'duration': 0.901}, {'end': 26508.687, 'text': 'Now, the data that comes from our context, from the data provider,', 'start': 26504.865, 'duration': 3.822}, {'end': 26514.93, 'text': 'will be available to all of the components within if we choose to pull it in using the use context hook.', 'start': 26508.687, 'duration': 6.243}, {'end': 26521.953, 'text': "Let's go ahead and scroll up here in the app.js and start moving some of our state and information over to our data context,", 'start': 26515.23, 'duration': 6.723}, {'end': 26528.276, 'text': 'while we still leave it here as well, so we can keep the app working during the transition here as we refactor.', 'start': 26521.953, 'duration': 6.323}, {'end': 26531.818, 'text': "So I'm going to highlight everything after the components here.", 'start': 26528.796, 'duration': 3.022}, {'end': 26538.482, 'text': "So I've got the route switch and history from React Router DOM and everything below it except the data provider.", 'start': 26531.878, 'duration': 6.604}, {'end': 26548.448, 'text': "And so down to Axios Fetch, I'm going to copy all of that and put these import statements in our data context as well.", 'start': 26539.303, 'duration': 9.145}, {'end': 26552.11, 'text': "Now, of course, we don't need the useState and useEffect from React.", 'start': 26548.548, 'duration': 3.562}, {'end': 26553.191, 'text': "We've already got that.", 'start': 26552.15, 'duration': 1.041}, {'end': 26557.534, 'text': "We won't need the route and switch, but we will have useHistory here.", 'start': 26553.711, 'duration': 3.823}, {'end': 26560.115, 'text': "and then we've got format.", 'start': 26558.234, 'duration': 1.881}, {'end': 26563.617, 'text': 'now, when we get to our api, we have to consider where this file is.', 'start': 26560.115, 'duration': 3.502}, {'end': 26566.979, 'text': "we have data context inside a context folder, so that's different.", 'start': 26563.617, 'duration': 3.362}, {'end': 26574.403, 'text': "we need to come up out of the folder with two dots, and then we'll have the api and then the post, and the same for the hooks.", 'start': 26566.979, 'duration': 7.424}, {'end': 26577.125, 'text': 'we just need to add a dot in front of each one of these.', 'start': 26574.403, 'duration': 2.722}, {'end': 26579.927, 'text': "so there's two dots and And that should be good.", 'start': 26577.125, 'duration': 2.802}, {'end': 26586.572, 'text': 'Once we save that, we can go back to the app.js and start to grab the rest of this information as well.', 'start': 26580.788, 'duration': 5.784}, {'end': 26589.974, 'text': "So let's grab all of the state that we have here.", 'start': 26586.632, 'duration': 3.342}, {'end': 26594.498, 'text': "Let's grab the Axios fetch, the to use effects as well.", 'start': 26590.555, 'duration': 3.943}, {'end': 26595.779, 'text': 'Copy all of that.', 'start': 26594.798, 'duration': 0.981}, {'end': 26598.281, 'text': "Control C, since I'm on Windows.", 'start': 26596.399, 'duration': 1.882}, {'end': 26603.084, 'text': 'And now inside the data provider, we can paste that right in.', 'start': 26598.881, 'duration': 4.203}, {'end': 26608.755, 'text': "just like we had it in our app, except now it's in the data provider.", 'start': 26604.232, 'duration': 4.523}, {'end': 26613.819, 'text': "Of course, we've left it in the app for now just to keep the application working.", 'start': 26609.656, 'duration': 4.163}, {'end': 26623.647, 'text': 'We can also take all of this logic, the handle submit, handle edit, and handle delete, copy that, and put it in the context as well.', 'start': 26614.16, 'duration': 9.487}, {'end': 26631.193, 'text': "Now, if you have a little bit of experience with React, you may be thinking, wait, what is he doing? Well, right now, we're just dumping it all.", 'start': 26624.73, 'duration': 6.463}, {'end': 26635.615, 'text': "Everything that we had in the app.js, we're putting in the data context.", 'start': 26631.573, 'duration': 4.042}, {'end': 26637.856, 'text': 'We can get a little more organized later.', 'start': 26635.996, 'duration': 1.86}, {'end': 26639.877, 'text': 'We can think about efficiency some.', 'start': 26637.896, 'duration': 1.981}, {'end': 26640.998, 'text': 'This is a small app.', 'start': 26639.957, 'duration': 1.041}, {'end': 26643.019, 'text': 'React is already very efficient.', 'start': 26641.398, 'duration': 1.621}, {'end': 26645.88, 'text': "But we'll talk about some of those things here in the future.", 'start': 26643.539, 'duration': 2.341}, {'end': 26653.044, 'text': "Right now, just taking all of that stuff we had in app.js, and we're moving it into our data context.", 'start': 26645.94, 'duration': 7.104}, {'end': 26655.206, 'text': 'now at the bottom.', 'start': 26654.486, 'duration': 0.72}, {'end': 26658.627, 'text': "we're not providing anything yet, but we will.", 'start': 26655.206, 'duration': 3.421}, {'end': 26660.808, 'text': "right now we've left everything here as well.", 'start': 26658.627, 'duration': 2.181}, {'end': 26666.37, 'text': "so let's scroll down in the app.js and the first thing we have is the header.", 'start': 26660.808, 'duration': 5.562}, {'end': 26672.032, 'text': 'you can see the header is receiving a width prop as well the title.', 'start': 26666.37, 'duration': 5.662}], 'summary': 'Creating a data provider to provide data to components and moving state and logic from app.js to data context.', 'duration': 325.155, 'max_score': 26346.877, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go26346877.jpg'}, {'end': 26548.448, 'src': 'embed', 'start': 26521.953, 'weight': 6, 'content': [{'end': 26528.276, 'text': 'while we still leave it here as well, so we can keep the app working during the transition here as we refactor.', 'start': 26521.953, 'duration': 6.323}, {'end': 26531.818, 'text': "So I'm going to highlight everything after the components here.", 'start': 26528.796, 'duration': 3.022}, {'end': 26538.482, 'text': "So I've got the route switch and history from React Router DOM and everything below it except the data provider.", 'start': 26531.878, 'duration': 6.604}, {'end': 26548.448, 'text': "And so down to Axios Fetch, I'm going to copy all of that and put these import statements in our data context as well.", 'start': 26539.303, 'duration': 9.145}], 'summary': 'Refactoring app to include react router and axios fetch in data context.', 'duration': 26.495, 'max_score': 26521.953, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go26521953.jpg'}], 'start': 24937.585, 'title': 'Refactoring and custom hooks in react', 'summary': 'Covers refactoring the cleanup function, creating useaxiosfetch hook, creating custom hook for axios fetch, react component loading and error handling, and refactoring with context api, emphasizing efficiency improvements and user experience enhancements through practical demonstrations.', 'chapters': [{'end': 25061.902, 'start': 24937.585, 'title': 'Refactoring cleanup function in custom hook', 'summary': 'Demonstrates refactoring the cleanup function in a custom hook, showing the removal of unused imports and the proper execution of the cleanup function, with a demonstration of the useeffect dependency change message.', 'duration': 124.317, 'highlights': ['The cleanup function is refactored to return an anonymous function, allowing for the removal of the event listener without the need for a separate named function, simplifying the code structure.', "Demonstrating the removal of unused imports in the application, resolving the warning message 'FA mobile is defined, but never used' to optimize the codebase.", "Illustrating the proper execution of the cleanup function within the custom hook, showcasing the message 'runs if a useEffect dependency changes' upon making a file change and reload, confirming the functionality of the cleanup process."]}, {'end': 25451.89, 'start': 25062.663, 'title': 'Creating useaxiosfetch hook', 'summary': 'Covers creating a useaxiosfetch hook, which involves defining state, implementing a fetchdata function with axios, and handling loading and error states.', 'duration': 389.227, 'highlights': ['Defining the useAxiosFetch hook involves setting up state for data, fetch error, and loading, using useState and useEffect from React.', 'The fetchData function within the useAxiosFetch hook utilizes async/await to make a request with Axios, sets loading state to true, and handles success and error responses appropriately.', 'The chapter also emphasizes the importance of checking if the component is mounted to prevent memory leaks and demonstrates setting a timeout to simulate loading.', 'The useAxiosFetch hook demonstrates the integration of Axios with custom hooks, providing a versatile solution for making API requests and managing data in React applications.']}, {'end': 25927.569, 'start': 25452.15, 'title': 'Creating custom hook for axios fetch', 'summary': 'Describes the process of creating a custom hook for axios fetch, setting up dependencies for useeffect, returning three values from the custom hook, and implementing the custom hook in an application to fetch data and handle fetch error and loading status.', 'duration': 475.419, 'highlights': ['The chapter describes the process of creating a custom hook for Axios fetch, setting up dependencies for useEffect, returning three values from the custom hook, and implementing the custom hook in an application to fetch data and handle fetch error and loading status.', 'The custom hook returns three values: data, fetch error, and is loading, to be used in the application.', 'The process involves setting the data URL as a dependency for the useEffect, ensuring that the useEffect runs whenever the data URL changes.', 'The cleanup function in the custom hook is designed to cancel a request if the component is unloaded during the request and set isMounted to false.', 'The chapter explains the use of try, catch, and finally blocks inside the fetchData function to handle successful data retrieval, error handling, and setting isLoading status to false.', 'The steps for implementing the custom hook in an application include importing the hook, de-structuring the values received, and passing the full URL to the useAxiosFetch function.', 'The use of useEffect to update the post state when the data changes, and passing fetch error and is loading to the homepage for handling fetch error and loading status.']}, {'end': 26217.311, 'start': 25927.569, 'title': 'React component loading and error handling', 'summary': 'Demonstrates how to handle loading and error messages in a react component, using conditional rendering and custom hooks, resulting in improved user experience and efficient code execution.', 'duration': 289.742, 'highlights': ['The chapter demonstrates how to handle loading and error messages in a React component The transcript provides a detailed guide on managing loading and error messages within a React component, showcasing best practices for user interface experience.', 'Using conditional rendering and custom hooks improves user experience and code efficiency The use of conditional rendering and custom hooks ensures an efficient and user-friendly approach to handling loading and error messages in the React component.', "Demonstrates setting loading message and error message with conditional checks The transcript illustrates the process of setting loading and error messages using conditional checks, enhancing the component's ability to communicate status to the user."]}, {'end': 26579.927, 'start': 26217.771, 'title': 'Refactoring with context api', 'summary': 'Discusses refactoring a blog application to use context instead of drilling props down, creating a data context, defining a data provider, and importing the data provider into the app.js file.', 'duration': 362.156, 'highlights': ['The chapter discusses refactoring a blog application to use context instead of drilling props down, creating a data context, defining a data provider, and importing the data provider into the app.js file.', 'The refactoring aims to have a much neater app.js file and to eliminate the need for passing props down by using the use context hook.', 'The process involves creating a new folder called context and a new file named data context to define the data provider, which will provide the data to different components within the application.', 'The data context includes the import of useState and useEffect, and defines the data provider that provides data to the components using the use context hook.', 'The app.js file is modified to import the data provider from the context folder and to wrap all components within the data provider, making the data available to all components using the use context hook.']}, {'end': 26829.381, 'start': 26580.788, 'title': 'Moving app logic to data context', 'summary': 'Details the process of moving app logic and state information from app.js to the data provider, using context and hooks, to improve organization and efficiency, while demonstrating the functionality through a resizing example in the application.', 'duration': 248.593, 'highlights': ['Moving app logic and state information from app.js to the data provider The chapter discusses the process of transferring all logic and state from app.js to the data provider for better organization and efficiency.', 'Utilizing context and hooks to manage state and logic The transcript emphasizes the use of context and hooks, such as useContext and useState, to manage state and logic within the data provider.', 'Demonstrating functionality through a resizing example in the application A practical example of the functionality is shown through a resizing demonstration in the application, showcasing the successful transfer of logic and state information.']}], 'duration': 1891.796, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go24937585.jpg', 'highlights': ['Refactored cleanup function simplifies code structure', 'Demonstrated removal of unused imports to optimize codebase', 'Defined useAxiosFetch hook with state setup and async/await usage', 'Emphasized importance of checking if component is mounted to prevent memory leaks', 'Custom hook for Axios fetch returns data, fetch error, and loading status', 'Implemented custom hook in application to fetch data and handle loading status', 'Demonstrated handling loading and error messages in React component', 'Refactored blog application to use context for better organization and efficiency', 'Transferred app logic and state information to the data provider for better organization', 'Utilized context and hooks to manage state and logic within the data provider']}, {'end': 28547.951, 'segs': [{'end': 27002.865, 'src': 'embed', 'start': 26973.917, 'weight': 7, 'content': [{'end': 26978.842, 'text': "and again, even though this says posts, that's because we had labeled it that before it came in.", 'start': 26973.917, 'duration': 4.925}, {'end': 26986.641, 'text': "so we'll need to switch that to search results, if I can highlight it all.", 'start': 26978.842, 'duration': 7.799}, {'end': 26988.321, 'text': 'There we go, search results.', 'start': 26986.881, 'duration': 1.44}, {'end': 26993.382, 'text': "Let's eliminate the props that were being destructured there.", 'start': 26990.662, 'duration': 2.72}, {'end': 27002.865, 'text': 'And now inside of our function, we need to change a couple of things because this should no longer be posts, it would be search results.', 'start': 26994.403, 'duration': 8.462}], 'summary': 'Switched labeled posts to search results in the function.', 'duration': 28.948, 'max_score': 26973.917, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go26973917.jpg'}, {'end': 27476.685, 'src': 'embed', 'start': 27450.483, 'weight': 1, 'content': [{'end': 27454.465, 'text': 'And now we can change this up as well and make it the component.', 'start': 27450.483, 'duration': 3.982}, {'end': 27468.661, 'text': 'And if we look at our app.js file now, it is much, much cleaner.', 'start': 27464.719, 'duration': 3.942}, {'end': 27471.282, 'text': 'The data provider surrounds everything.', 'start': 27468.741, 'duration': 2.541}, {'end': 27476.685, 'text': 'And of course, we have our routing in here that we previously had, including our switch statement.', 'start': 27471.903, 'duration': 4.782}], 'summary': 'Improved app.js file with cleaner code and centralized data provider and routing.', 'duration': 26.202, 'max_score': 27450.483, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go27450483.jpg'}, {'end': 27670.924, 'src': 'embed', 'start': 27633.61, 'weight': 0, 'content': [{'end': 27637.252, 'text': 'If we go to App.js and once again look at each component,', 'start': 27633.61, 'duration': 3.642}, {'end': 27643.196, 'text': 'we could stop and think that really the header does not need to receive any of the post data.', 'start': 27637.252, 'duration': 5.944}, {'end': 27651.941, 'text': "It's only receiving this title prop, and then we're passing a width to it, if you remember, and that determines the icon for the header alone.", 'start': 27643.736, 'duration': 8.205}, {'end': 27655.222, 'text': "So it doesn't really need to be involved with the rest of this.", 'start': 27652.601, 'duration': 2.621}, {'end': 27659.902, 'text': "Likewise, the footer isn't receiving any data either, and it doesn't need to be there.", 'start': 27655.342, 'duration': 4.56}, {'end': 27670.924, 'text': 'So we could move our data provider and we could wrap it around everything, starting at the nav and ending it at the switch route,', 'start': 27659.982, 'duration': 10.942}], 'summary': "App.js components don't require post data, consider moving data provider to wrap around all components.", 'duration': 37.314, 'max_score': 27633.61, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go27633610.jpg'}, {'end': 28347.001, 'src': 'embed', 'start': 28315.905, 'weight': 5, 'content': [{'end': 28320.575, 'text': "And now that we have EditPost open, We'll put the state right here at the top.", 'start': 28315.905, 'duration': 4.67}, {'end': 28328.237, 'text': 'And we are going to need to still bring in posts and probably set posts.', 'start': 28321.916, 'duration': 6.321}, {'end': 28330.838, 'text': "So we'll once again pass that right there.", 'start': 28328.577, 'duration': 2.261}, {'end': 28336.039, 'text': "We've got useEffect here with post, setEditTitle, setEditBody.", 'start': 28331.918, 'duration': 4.121}, {'end': 28336.959, 'text': 'That is fine.', 'start': 28336.179, 'duration': 0.78}, {'end': 28338.819, 'text': "We're already bringing in useEffect here.", 'start': 28337.119, 'duration': 1.7}, {'end': 28341.22, 'text': 'So we need to bring in that function.', 'start': 28339.299, 'duration': 1.921}, {'end': 28347.001, 'text': "So let's go back and now grab handleEdit.", 'start': 28342.3, 'duration': 4.701}], 'summary': 'Bringing in state and functions in editpost for handling posts.', 'duration': 31.096, 'max_score': 28315.905, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go28315905.jpg'}], 'start': 26830.501, 'title': 'Refactoring react app and context', 'summary': 'Covers refactoring the react app to use context, optimizing component props, and organizing context to improve functionality and code structure, resulting in a streamlined data management process and improved application performance.', 'chapters': [{'end': 27054.049, 'start': 26830.501, 'title': 'Refactoring context usage in react app', 'summary': 'Describes refactoring the react app to use context and eliminate props, resulting in cleaner code and improved functionality, with the app functioning as expected.', 'duration': 223.548, 'highlights': ['Refactored the app to use context and eliminated props, resulting in cleaner code The speaker refactored the app to use context and eliminated the need for props, resulting in cleaner and more efficient code.', 'Improved functionality and ensured the app functions as expected The changes made to the app resulted in improved functionality, with the app functioning as expected, including the ability to search.']}, {'end': 27337.391, 'start': 27054.169, 'title': 'Optimizing component props in react', 'summary': 'Entails optimizing and cleaning up component props in a react application by eliminating unnecessary props, using context to receive props, and ensuring all required props are sent through the provider.', 'duration': 283.222, 'highlights': ['Eliminated unnecessary props being drilled down to components, resulting in cleaner routes and code. By eliminating all three props being drilled down to the home component and specifying the component in the route, the code was made cleaner and more efficient.', 'Refactored new post component to receive props from context instead of deconstructing them, resulting in streamlined functionality. The new post component was refactored to receive five different props from the context, eliminating the need to destructure props and improving functionality.', 'Resolved errors by ensuring all required props and functions are sent through the data provider, ensuring seamless functionality. Errors related to missing functions and state pieces were resolved by sending all required props and functions through the data provider, ensuring seamless functionality.']}, {'end': 27633.11, 'start': 27337.951, 'title': 'Refactoring app.js and context organization', 'summary': 'Focuses on refactoring the app.js file and organizing the context, resulting in a more efficient and manageable code structure. changes include removing unnecessary code and restructuring the use of context and data providers to improve component rendering and overall application performance.', 'duration': 295.159, 'highlights': ['Refactoring App.js file and organizing context The transcript mainly revolves around refactoring the App.js file and organizing the context to improve code structure and application performance.', 'Removing unnecessary code and functions The speaker removes unnecessary pieces of state, functions like handle submit, handle edit, and handle delete, resulting in a much smaller and easier-to-manage App.js file.', 'Utilizing context for efficient data management The chapter emphasizes the use of context for data management, enabling all components to subscribe to the context, leading to a more efficient and organized code structure.']}, {'end': 28547.951, 'start': 27633.61, 'title': 'Refactoring data handling in react components', 'summary': 'Discusses refactoring data handling in react components, decoupling components from unnecessary data, and containing state within specific components, resulting in a streamlined and efficient data management process. the chapter emphasizes the importance of sharing data only when necessary and optimizing the use of context and hooks to achieve this.', 'duration': 914.341, 'highlights': ['The chapter emphasizes the importance of sharing data only when necessary The chapter discusses how the header and footer components do not need to receive post data, leading to the conclusion that data should only be shared when essential for a streamlined data management process.', 'Decoupling components from unnecessary data The chapter focuses on decoupling the header component from post data by removing imports and defining the width using the useWindowSize hook, leading to a simplified and more efficient data handling process.', 'Containing state within specific components The chapter highlights the practice of containing state within specific components, such as post title and post body, within the new post component, eliminating the need to share this data with other components and optimizing data management.']}], 'duration': 1717.45, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go26830501.jpg', 'highlights': ['Refactored the app to use context and eliminated props, resulting in cleaner code', 'Improved functionality and ensured the app functions as expected', 'Refactored new post component to receive props from context instead of deconstructing them, resulting in streamlined functionality', 'Resolved errors by ensuring all required props and functions are sent through the data provider, ensuring seamless functionality', 'Refactoring App.js file and organizing context', 'Utilizing context for efficient data management', 'The chapter emphasizes the importance of sharing data only when necessary', 'Decoupling components from unnecessary data', 'Containing state within specific components']}, {'end': 31745.449, 'segs': [{'end': 29220.153, 'src': 'embed', 'start': 29187.108, 'weight': 2, 'content': [{'end': 29189.77, 'text': "We're passing in an ID that is received here.", 'start': 29187.108, 'duration': 2.662}, {'end': 29193.534, 'text': "Once again, we don't really need to define post lists like this.", 'start': 29190.451, 'duration': 3.083}, {'end': 29203.838, 'text': "We can just take the post.filter that we've defined there, cut that, replace post lists, Remove that from the code.", 'start': 29193.594, 'duration': 10.244}, {'end': 29208.723, 'text': 'And we need to remove the history once again and leave that inside the component.', 'start': 29204.098, 'duration': 4.625}, {'end': 29210.344, 'text': 'And we can save.', 'start': 29209.483, 'duration': 0.861}, {'end': 29214.328, 'text': "And now we've completed our delete post thunk action.", 'start': 29210.484, 'duration': 3.844}, {'end': 29220.153, 'text': "And before we're finished, we need to create the edit post thunk action.", 'start': 29214.708, 'duration': 5.445}], 'summary': 'Refactoring code to remove redundant post lists and complete delete post thunk action. creating edit post thunk action.', 'duration': 33.045, 'max_score': 29187.108, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go29187108.jpg'}, {'end': 29540.318, 'src': 'embed', 'start': 29511.494, 'weight': 1, 'content': [{'end': 29516.277, 'text': "Because we need to pull in set posts, and so it's from easy peasy.", 'start': 29511.494, 'duration': 4.783}, {'end': 29517.018, 'text': 'I said instance.', 'start': 29516.277, 'duration': 0.741}, {'end': 29523.122, 'text': "it's from our easy peasy store, and That's what we need to pull in is set posts.", 'start': 29517.018, 'duration': 6.104}, {'end': 29524.503, 'text': "So we're not quite finished.", 'start': 29523.302, 'duration': 1.201}, {'end': 29537.557, 'text': 'We need to say const, Set posts and set this equal to use store actions, and then it accepts the actions and an arrow function,', 'start': 29524.543, 'duration': 13.014}, {'end': 29540.318, 'text': 'and then we say actions.setPosts.', 'start': 29537.557, 'duration': 2.761}], 'summary': 'Pull in set posts from easy peasy store using use store actions.', 'duration': 28.824, 'max_score': 29511.494, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go29511494.jpg'}, {'end': 31376.575, 'src': 'embed', 'start': 31349.218, 'weight': 0, 'content': [{'end': 31363.847, 'text': "let's scroll back up to the top of our package json and underneath the version we need to add home page and a value for home page and the value will be where we plan to have our React application.", 'start': 31349.218, 'duration': 14.629}, {'end': 31371.132, 'text': "So we'll start with https colon slash slash, and then you need to put your GitHub username.", 'start': 31363.907, 'duration': 7.225}, {'end': 31376.575, 'text': 'Mine is git dagrey, and then put .github.io.', 'start': 31371.412, 'duration': 5.163}], 'summary': "Add 'homepage' with github username to the package.json for react application deployment.", 'duration': 27.357, 'max_score': 31349.218, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go31349218.jpg'}], 'start': 28547.951, 'title': 'Refactoring and deploying react app with easy peasy', 'summary': 'Discusses refactoring a reactjs blog to use easy peasy for state management, creating a store, integrating easy peasy into the application, and deploying the app to netlify and github pages, emphasizing the benefits of easy peasy and comparing hosting platforms.', 'chapters': [{'end': 28796.645, 'start': 28547.951, 'title': 'Refactoring reactjs blog with easy peasy', 'summary': 'Discusses refactoring the reactjs blog application to use easy peasy for state management, removing state management from the context api and moving it to easy peasy, which is built on top of redux, making using redux easier.', 'duration': 248.694, 'highlights': ['Refactoring the ReactJS blog application to use Easy Peasy for state management The chapter focuses on refactoring the ReactJS blog application to use Easy Peasy for state management, removing state management from the context API and moving it to Easy Peasy, which is built on top of Redux, making using Redux easier.', 'Installing Easy Peasy and cleaning up unnecessary packages The chapter covers the process of installing Easy Peasy and cleaning up unnecessary packages, removing testing libraries and Web Vitals from the project.', 'Launching json server and React app for making changes to the blog application The chapter details the process of launching json server and the React app in separate terminal windows to prepare for making changes to the blog application.']}, {'end': 29293.311, 'start': 28797.165, 'title': 'Creating easy peasy store', 'summary': 'Explains the process of creating a store using easy peasy, including importing necessary functions, defining state and actions, creating thunk actions for asynchronous operations, and integrating them with the store.', 'duration': 496.146, 'highlights': ['Defining state and actions in the Easy Peasy store The chapter explains the process of defining state and actions in the Easy Peasy store, including creating and setting initial state for posts, post titles, post bodies, and other related components.', 'Creating thunk actions for asynchronous operations The chapter demonstrates the creation of thunk actions for asynchronous operations such as saving posts, deleting posts, and editing posts, including the usage of async functions and integrating them with the store.', 'Importing necessary functions and integrating them with the store The chapter covers the process of importing functions like create store, action.func, and computed, and integrating them with the Easy Peasy store to support asynchronous actions and computed values of state.']}, {'end': 30628.738, 'start': 29294.832, 'title': 'Integrating easy peasy into application', 'summary': 'Details the process of integrating easy peasy for state management, including importing the store provider and store, replacing context api and usecontext hooks, and updating components to use easy peasy state and actions. it also emphasizes drilling props and the potential for more complex applications with easy peasy.', 'duration': 1333.906, 'highlights': ['The chapter details the process of integrating Easy Peasy for state management The chapter discusses the steps involved in integrating Easy Peasy for state management, including importing the store provider and store, and replacing the context API and useContext hooks.', 'It emphasizes drilling props and the potential for more complex applications with Easy Peasy The chapter highlights the concept of drilling props while using a state management library and mentions the potential for creating more complex applications with Easy Peasy by creating individual models and pulling those into a store.', 'Updating components to use Easy Peasy state and actions The chapter explains how to update components to use Easy Peasy state and actions, including removing the data provider context, moving hooks back into the app component, and importing necessary hooks and actions from Easy Peasy.']}, {'end': 30873.443, 'start': 30629.078, 'title': 'Easy peasy state management and deployment', 'summary': 'Discusses removing async keywords from handle functions in easy peasy store, utilizing usestorestate for managing state, and deploying an app to netlify and github pages, highlighting the benefits of easy peasy for state management and the process of deploying react development projects to different hosting platforms.', 'duration': 244.365, 'highlights': ['The Easy Peasy store handles async actions, eliminating the need for async keywords in handle functions, such as handle submit, handle delete, and handle edit.', 'Utilizing useStoreState from Easy Peasy allows for efficient management of state, as demonstrated by accessing the computed value post count to display the total blog posts in the footer.', 'The chapter also emphasizes the benefits of Easy Peasy for state management, mentioning that it makes using Redux much easier, cleans up the application, and simplifies managing actions, async actions, and computed values of state.', 'The chapter concludes with a discussion on deploying an app to Netlify and GitHub pages, providing insights into hosting React development projects on different platforms and the recommendation to explore Easy Peasy for state management.']}, {'end': 31745.449, 'start': 30873.483, 'title': 'Deploying react app to netlify and github pages', 'summary': 'Explains how to deploy a grocery list application using local storage to netlify and github pages. it includes cleaning up dependencies, initializing git repository, creating a new repository on github, deploying the application, and comparing the advantages of netlify and github pages.', 'duration': 871.966, 'highlights': ["The tutorial covers cleaning up dependencies by uninstalling unused packages using 'npm uninstall,' resulting in smaller dependencies and only retaining the ones being used. Uninstalling unused packages reduces dependency size and retains only necessary dependencies, optimizing the application.", 'The process of initializing a Git repository, adding files, committing the changes, and pushing the code to a new repository on GitHub is outlined, providing a step-by-step guide for beginners. Step-by-step guide for initializing a Git repository, adding files, committing changes, and pushing code to a new repository on GitHub, suitable for beginners.', 'The deployment process to Netlify involves creating a new site from Git, searching and selecting the repository, specifying build settings, and launching the application, demonstrating the seamless deployment to Netlify. Seamless deployment to Netlify by creating a new site from Git, specifying build settings, and launching the application.', 'The steps for deploying to GitHub Pages, including adding a dev dependency, modifying package.json, initializing the local repository, pushing the code to GitHub, running the deploy command, and accessing the deployed application, are clearly explained. Clear explanation of deploying to GitHub Pages, including adding dev dependency, modifying package.json, initializing the local repository, running the deploy command, and accessing the deployed application.', 'A comparison between Netlify and GitHub Pages is provided, highlighting the advantages of each platform, such as additional hosting features and ease of use, to help users make an informed decision. Comparison of the advantages of Netlify and GitHub Pages, aiding users in making an informed decision based on additional hosting features and ease of use.']}], 'duration': 3197.498, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/RVFAyFWO4go/pics/RVFAyFWO4go28547951.jpg', 'highlights': ['The chapter emphasizes the benefits of Easy Peasy for state management, making using Redux easier, cleaning up the application, and simplifying managing actions, async actions, and computed values of state.', 'The deployment process to Netlify involves creating a new site from Git, specifying build settings, and launching the application, demonstrating the seamless deployment to Netlify.', 'The steps for deploying to GitHub Pages, including adding a dev dependency, modifying package.json, initializing the local repository, running the deploy command, and accessing the deployed application, are clearly explained.', "The tutorial covers cleaning up dependencies by uninstalling unused packages using 'npm uninstall,' resulting in smaller dependencies and only retaining the ones being used.", 'A comparison between Netlify and GitHub Pages is provided, highlighting the advantages of each platform, such as additional hosting features and ease of use, to help users make an informed decision.']}], 'highlights': ['The chapter introduces 23 tutorials for learning React, emphasizing its importance as a JavaScript library for building user interfaces, its popularity, and the high demand for React developers, with over 208 jobs listed in the Kansas City area, including 92 offering $130,000 plus.', 'Installing Node.js on different platforms Node.js can be installed on different platforms such as Windows, Mac, and Linux, with platform-specific downloads available on nodejs.org.', 'The tutorials build upon each other in a chapter-like progression, and the creator recommends having a good understanding of HTML, CSS, and JavaScript before starting the tutorials.', "Creating a React project in Visual Studio Code The process of creating a React project in Visual Studio Code involves using the command 'npx create-react-app' followed by the project name, with the completion of the process taking a few minutes.", 'The chapter covers the default app component, JSX, and the usage of functional components over class components Modern React uses functional components, and the default component created by Create React App serves as a basis for understanding components before creating more.', 'The chapter introduces the default app component created by a new React project The default app component is the parent component for all others.', "The chapter explores JSX and its usage within the app component JSX resembles HTML but has differences, such as using 'class name' instead of 'class' for attributes.", "The chapter explains how to run the local development server using npm start Running 'npm start' launches a local development server at localhost port 3000, allowing for automatic updates as changes are made to the files.", 'The chapter emphasizes the importance of observing the component tree and learning to apply styles to React components, including using style sheets, inline styles, and styled components.', 'The chapter discusses adding functional components to a React project, emphasizing the reusability of functional components, and the importation of components into the app component in the component tree.', 'The importance of using semantic HTML in React is emphasized, encouraging the use of specific HTML elements like header and main instead of defaulting to divs.', 'The tutorial demonstrates using ES7 React Redux snippets for efficient code generation and recommends adding the extension to VS Code for quicker development.', 'The chapter emphasizes the importance of importing CSS styles in React functional components as without the import, none of the styles will be applied.', 'The tutorial illustrates the process of utilizing the useState hook to set default states, modify state values, and manage multiple states within a component.', 'A function named handleCheck is created to manage the click event of the check boxes, showcasing the initial state of the check boxes and the requirement to update the state when a check box is clicked.', 'The chapter demonstrates handling state updates and local storage management to delete items from a shopping list.', 'Creating a form for new items using React involves adding form elements with specific attributes such as autofocus, id, type, placeholder, and ARIA label.', 'The event is implicitly passed to the handle submit function, allowing it to receive the event and work with it as defined.', "The process of creating a new React project using Create React App with the command 'npx create-react-app' is demonstrated.", 'Covers the implementation of React Hook use effect, demonstrated in Visual Studio Code with the grocery list app.', 'Requests to the server, including GET, POST, PATCH, and DELETE, are demonstrated, with detailed insights into the specific types of requests and their corresponding functionalities.', 'The chapter introduces the creation of a generic API request function using async, await, and fetch, which accepts URL and options object, handles try-catch blocks, and returns the error message in the finally block.', 'The chapter demonstrates the successful implementation of CRUD operations using the Fetch API, showcasing the handling of various requests such as get, post, patch, and delete, with all requests returning the expected 200 responses.', 'Creating a reusable button component and setting button attributes', 'The chapter emphasizes the presence of nested objects in the users area, while contrasting it with the absence of nested objects in posts and comments.', 'The chapter focuses on building a blog application using React Router and custom hooks like use history.', 'Adding Handle Delete Function Defined handle delete function to filter out the post to be deleted by its ID, resulting in successful post deletion and immediate redirection to the home page.', 'The process involves defining the date format, creating a new post, specifying the post ID, title, and date time, as well as updating the post body and managing the list of all posts.', 'The chapter discusses the implementation of CRUD operations in a development application using Axios, including the use of POST, GET, DELETE, and PUT methods to interact with the backend API and update the state.', 'The deployment process to Netlify involves creating a new site from Git, specifying build settings, and launching the application, demonstrating the seamless deployment to Netlify.', 'The steps for deploying to GitHub Pages, including adding a dev dependency, modifying package.json, initializing the local repository, running the deploy command, and accessing the deployed application, are clearly explained.']}