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React Interview Questions and Answers | React Interview Questions | ReactJS Tutorial | Simplilearn

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🔥 IITM Pravartak Professional Certificate Program In Full Stack Development - MERN (India Only): https://www.simplilearn.com/full-stack-developer-course-and-certification-iitm-pravartak?utm_campaign=SCE-FullstackIITM&utm_medium=DescriptionFF&utm_source=youtube 🔥Post Graduate Program In Full Stack Web Development: https://www.simplilearn.com/pgp-full-stack-web-development-certification-training-course?utm_campaign=TopJavaScriptIQs&utm_medium=Descriptionff&utm_source=youtube 🔥Caltech Coding Bootcamp (US Only): https://www.simplilearn.com/coding-bootcamp?utm_campaign=TopJavaScriptIQs&utm_medium=Descriptionff&utm_source=youtube 🔥Full Stack Java Developer (India Only) - https://www.simplilearn.com/java-full-stack-developer-certification-training-course?utm_campaign=TopJavaScriptIQs&utm_medium=Descriptionff&utm_source=youtube In this JavaScript Interview Questions video, you will learn some of the top beginner, intermediate and advanced level questions that are often asked in an interview. You will look at theoretical and practical based questions on several crucial topics of JavaScript. ✅Subscribe to our Channel to learn more about the top Technologies: https://bit.ly/2VT4WtH ⏩ Check out the JavaScript training videos: https://www.youtube.com/watch?v=0YFtEZaN6wU&list=PLEiEAq2VkUULeP75xLYYnY1wqddxPdSXj #JavaScriptInterviewQuestionsAndAnswers #JavaScriptInterivewPreparation #JavaScriptInterviewQuestionsForFreshers #JavaScriptInterviewQuestionsForExperienced #JavaScriptTutorial #JavaScriptTraining #JavaScriptCourse #FullStackWebDevelopmentTraining #FullStackDeveloperTutorial #FullStackWebDevelopmentCourse #FullStackTraining #Simplilearn ➡️ About Post Graduate Program In Full Stack Web Development This program will give you the foundation for building full-stack web apps using the Java programming language. You'll begin with the basics of JavaScript, and then venture into some of the more advanced concepts like Angular, Spring Boot, Hibernate, JSPs, and MVC. Now is the perfect time to get started on your career as a full-stack web developer! ✅ Key Features - Caltech CTME Post Graduate Certificate - Enrolment in Simplilearn’s JobAssist - Receive up to 25 CEUs from Caltech CTME - Simplilearn's JobAssist helps you get noticed by top hiring companies - Attend Masterclasses from Caltech CTME instructors - Live virtual classes led by industry experts, hands-on projects and integrated labs - Online Convocation by Caltech CTME Program Director - 20 lesson-end and 5 phase-end projects - Capstone Project in 4 domains - Caltech CTME Circle Membership - Build your own portfolio on GitHub ✅ Skills Covered - Agile - JAVA - Hibernate and JPA - Spring Core 50 - DevOps - HTML5 and CSS3 - AWS - JavaScript ES6 - Servlets - SOAP and REST - JSP 👉Learn more at: https://www.simplilearn.com/pgp-full-stack-web-development-certification-training-course?utm_campaign=TopJavaScriptIQs&utm_medium=Description&utm_source=youtube 🔥Enroll for Free JavaScript Course & Get Your Completion Certificate: https://www.simplilearn.com/learn-javascript-basics-free-course-skillup?utm_campaign=TopJavaScriptIQs&utm_medium=Description&utm_source=youtube 🔥🔥 Interested in Attending Live Classes? Call Us: IN - 18002127688 / US - +18445327688

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{'title': 'React Interview Questions and Answers | React Interview Questions | ReactJS Tutorial | Simplilearn', 'heatmap': [{'end': 1354.698, 'start': 1316.613, 'weight': 0.722}], 'summary': "Tutorial covers reactjs interview faqs, including features of reactjs, jsx, virtual dom, and react's advantage over other frameworks. it also explains es6 standards, react app creation, data display using the map function, form creation, performance optimization, arrow functions, lifecycle methods, redux, flux, react routing, and styling react components with css.", 'chapters': [{'end': 163.796, 'segs': [{'end': 71.713, 'src': 'embed', 'start': 30.182, 'weight': 0, 'content': [{'end': 33.565, 'text': 'The first question would be what are the features of ReactJS??', 'start': 30.182, 'duration': 3.383}, {'end': 35.908, 'text': 'Now, right through this session,', 'start': 33.985, 'duration': 1.923}, {'end': 47.463, 'text': 'we would follow a common methodology where we would explore the question and then look at the best way in which you could have answered that question if posed to you during a React.js interview.', 'start': 35.908, 'duration': 11.555}, {'end': 56.969, 'text': 'So starting with the first question, what are the features of React? So, React has many extensions for complete application architecture support.', 'start': 47.583, 'duration': 9.386}, {'end': 63.071, 'text': 'JSX is used with React to describe what the user interface should typically look like.', 'start': 57.11, 'duration': 5.961}, {'end': 65.912, 'text': 'React is broken into small components.', 'start': 63.251, 'duration': 2.661}, {'end': 71.713, 'text': 'So you look at the complete application you want to build, break it down into individual components,', 'start': 66.332, 'duration': 5.381}], 'summary': 'Reactjs features include jsx, small components, and application architecture support.', 'duration': 41.531, 'max_score': 30.182, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX830182.jpg'}, {'end': 137.619, 'src': 'embed', 'start': 91.908, 'weight': 1, 'content': [{'end': 95.572, 'text': 'The virtual DOM is also a lightweight representation of React.', 'start': 91.908, 'duration': 3.664}, {'end': 103.656, 'text': 'The real DOM, which is again a feature with, helps speed up performance and avoids a full page refresh and a full DOM tree shake,', 'start': 95.672, 'duration': 7.984}, {'end': 105.177, 'text': 'which really speeds up performance.', 'start': 103.656, 'duration': 1.521}, {'end': 106.698, 'text': 'So what is JSX??', 'start': 105.477, 'duration': 1.221}, {'end': 107.658, 'text': 'How do you answer this?', 'start': 106.758, 'duration': 0.9}, {'end': 116.985, 'text': "So, JSX is typically the extension used for react and it's nothing but an extension to the JavaScript programming language,", 'start': 107.999, 'duration': 8.986}, {'end': 123.929, 'text': 'because all that you can use inside your browser for execution typically has to be JavaScript,', 'start': 116.985, 'duration': 6.944}, {'end': 128.913, 'text': 'because in HTML 5 you cannot have any third-party plugins installed in the browser.', 'start': 123.929, 'duration': 4.984}, {'end': 133.036, 'text': "And that's the reason the browser would only ship by default with a JavaScript runtime engine.", 'start': 128.933, 'duration': 4.103}, {'end': 137.619, 'text': 'So, by using JSX, you can write HTML structures in the same file.', 'start': 133.216, 'duration': 4.403}], 'summary': 'Virtual dom speeds up performance; jsx extends javascript for writing html in the same file.', 'duration': 45.711, 'max_score': 91.908, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX891908.jpg'}], 'start': 7.366, 'title': 'Reactjs interview faq', 'summary': 'Covers commonly asked reactjs interview questions, including features of reactjs, jsx, and virtual dom, emphasizing speed and simplicity in react development.', 'chapters': [{'end': 163.796, 'start': 7.366, 'title': 'Reactjs interview faq', 'summary': 'Covers commonly asked reactjs interview questions, including features of reactjs, jsx, and virtual dom, emphasizing speed and simplicity in react development.', 'duration': 156.43, 'highlights': ['React has many extensions for complete application architecture support, with speedy performance and one-way data binding as core features, making it ideal for building user interfaces efficiently.', 'JSX is an extension used for React, enabling the writing of HTML structures in the same file as JavaScript code, simplifying code updates and modifications.', 'The virtual DOM in React is a lightweight representation that enhances performance by avoiding full page refresh and DOM tree shake, leading to improved speed.', 'ReactJS interview questions cover topics such as features of React, JSX, virtual DOM, and one-way data binding, all emphasizing the efficiency and speed of React development.']}], 'duration': 156.43, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX87366.jpg', 'highlights': ['React has many extensions for complete application architecture support, with speedy performance and one-way data binding as core features, making it ideal for building user interfaces efficiently.', 'The virtual DOM in React is a lightweight representation that enhances performance by avoiding full page refresh and DOM tree shake, leading to improved speed.', 'JSX is an extension used for React, enabling the writing of HTML structures in the same file as JavaScript code, simplifying code updates and modifications.', 'ReactJS interview questions cover topics such as features of React, JSX, virtual DOM, and one-way data binding, all emphasizing the efficiency and speed of React development.']}, {'end': 588.546, 'segs': [{'end': 216.098, 'src': 'embed', 'start': 188.395, 'weight': 2, 'content': [{'end': 191.739, 'text': 'And JSX is not a regular JavaScript object.', 'start': 188.395, 'duration': 3.344}, {'end': 193.08, 'text': "It's a React component.", 'start': 191.799, 'duration': 1.281}, {'end': 199.126, 'text': 'So for a web browser to read a JSX file, the file needs to be transformed into a regular JavaScript object.', 'start': 193.26, 'duration': 5.866}, {'end': 204.751, 'text': 'And for this, there is a JavaScript API called Bebel, which is internally used by React.', 'start': 199.166, 'duration': 5.585}, {'end': 209.576, 'text': "So what do you understand by the virtual DOM that we've been speaking about in React?", 'start': 205.092, 'duration': 4.484}, {'end': 216.098, 'text': 'So React gives a very lightweight representation of the real DOM, the actual DOM structure of the page.', 'start': 209.716, 'duration': 6.382}], 'summary': 'Jsx is transformed into a regular javascript object using babel, and react provides a lightweight representation of the real dom.', 'duration': 27.703, 'max_score': 188.395, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8188395.jpg'}, {'end': 284.262, 'src': 'embed', 'start': 245.211, 'weight': 0, 'content': [{'end': 248.113, 'text': 'It uses a virtual DOM, which is a layer on top of the actual DOM,', 'start': 245.211, 'duration': 2.902}, {'end': 252.877, 'text': 'which ensures that only a certain part of the page is refreshed and that speeds up performance.', 'start': 248.113, 'duration': 4.764}, {'end': 259.003, 'text': 'So when the state of an object changes, virtual DOM changes only that object in the real DOM instead of updating all the objects.', 'start': 253.237, 'duration': 5.766}, {'end': 261.385, 'text': 'And this is what makes things really fast.', 'start': 259.243, 'duration': 2.142}, {'end': 264.068, 'text': 'So why use React instead of other frameworks like Angular?', 'start': 261.644, 'duration': 2.424}, {'end': 272.676, 'text': "First of all, it's very easy to create dynamic web pages DHTML, where you can update the view or the template at runtime.", 'start': 264.168, 'duration': 8.508}, {'end': 276.238, 'text': 'The components are reusable, so you reuse rather than reinvent.', 'start': 272.856, 'duration': 3.382}, {'end': 277.518, 'text': 'The performance is great.', 'start': 276.418, 'duration': 1.1}, {'end': 280.7, 'text': "Since you're working with the virtual DOM, you don't need a full page refresh.", 'start': 277.899, 'duration': 2.801}, {'end': 284.262, 'text': 'The unidirectional data flow makes data move one way.', 'start': 280.92, 'duration': 3.342}], 'summary': "React's virtual dom boosts performance, enables easy dynamic web pages, and provides reusable components.", 'duration': 39.051, 'max_score': 245.211, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8245211.jpg'}, {'end': 326.324, 'src': 'embed', 'start': 299.971, 'weight': 3, 'content': [{'end': 305.795, 'text': "and that's what makes it more popular in terms of its simplicity and speed as compared to other frameworks like angular.", 'start': 299.971, 'duration': 5.824}, {'end': 310.799, 'text': 'what is the difference between es5 and es6 standard?', 'start': 305.795, 'duration': 5.004}, {'end': 317.861, 'text': 'So these are scripting standards that are defined by the European Computer Manufacturers Association or ECMA,', 'start': 310.959, 'duration': 6.902}, {'end': 326.324, 'text': 'and all of the scripting languages are a subset of the standard and are derived from these standards to ensure that the code will execute on all browsers,', 'start': 317.861, 'duration': 8.463}], 'summary': 'Es6 is more popular for its simplicity and speed compared to angular, as it is a subset of the ecma standard ensuring cross-browser compatibility.', 'duration': 26.353, 'max_score': 299.971, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8299971.jpg'}, {'end': 406.798, 'src': 'embed', 'start': 380.639, 'weight': 4, 'content': [{'end': 387.161, 'text': "In ES6, it's replaced with the import statement, very similar to the syntax that we use in core Java.", 'start': 380.639, 'duration': 6.522}, {'end': 395.428, 'text': 'So how do you go and create a React app? First, you install Node.js as a base platform which you can download from the Node.js website.', 'start': 387.361, 'duration': 8.067}, {'end': 401.053, 'text': 'Next, any text editor of your choice could be Atom, Visual Studio Code or Sublime Text.', 'start': 395.568, 'duration': 5.485}, {'end': 406.798, 'text': 'Third, you create a React app using a command prompt terminal depending on the OS you are using.', 'start': 401.093, 'duration': 5.705}], 'summary': "Es6 'require' replaced with 'import' statement. install node.js, choose text editor, create react app using terminal.", 'duration': 26.159, 'max_score': 380.639, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8380639.jpg'}, {'end': 486.387, 'src': 'embed', 'start': 462.093, 'weight': 5, 'content': [{'end': 469.437, 'text': 'which triggers a simple alert message box, and a render function which returns html when you click on the button.', 'start': 462.093, 'duration': 7.344}, {'end': 477.602, 'text': "we would want to bind that to the event handler, this dot work, and that's how you connect a click event to an event handler function.", 'start': 469.437, 'duration': 8.165}, {'end': 479.762, 'text': 'What are synthetic events in React??', 'start': 478.001, 'duration': 1.761}, {'end': 486.387, 'text': "Well, a synthetic event is an object which acts as a cross browser wrapper around the browser's native event.", 'start': 480.002, 'duration': 6.385}], 'summary': 'React synthetic events act as cross-browser wrappers for native events.', 'duration': 24.294, 'max_score': 462.093, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8462093.jpg'}], 'start': 163.796, 'title': 'React and es6 in web development', 'summary': 'Provides an overview of the role of jsx in react, the advantages of using react over other frameworks, and explains the differences between es5 and es6 standards. it also outlines the process of creating a react app and the concept of events and synthetic events in react.', 'chapters': [{'end': 299.971, 'start': 163.796, 'title': 'React and jsx overview', 'summary': 'Discusses the role of jsx in react, the need for transformation of jsx into regular javascript objects for web browsers, the concept of virtual dom in react, and the advantages of using react over other frameworks like angular, highlighting its ease of creating dynamic web pages, reusability of components, and unidirectional data flow.', 'duration': 136.175, 'highlights': ['React uses virtual DOM to speed up performance by updating only specific components when the state of an object changes, avoiding full page refresh, leading to faster processing time and simplified debugging. React utilizes virtual DOM to efficiently update specific components when the state of an object changes, eliminating the need for full page refresh and reducing processing time and simplifying debugging.', 'JSX needs to be transformed into a regular JavaScript object for web browsers to read, utilizing a JavaScript API called Babel internally used by React. To enable web browsers to read JSX, it needs to be transformed into a regular JavaScript object using a JavaScript API called Babel, which is internally utilized by React.', 'Advantages of using React over other frameworks include ease of creating dynamic web pages, reusability of components, and unidirectional data flow, leading to improved performance. React offers advantages such as the ease of creating dynamic web pages, reusability of components, and unidirectional data flow, resulting in enhanced performance compared to other frameworks.']}, {'end': 588.546, 'start': 299.971, 'title': 'Es6 syntax and react basics', 'summary': 'Explains the differences between es5 and es6 standards, highlights the syntax changes in es6, and outlines the process of creating a react app, along with the concept of events and synthetic events in react.', 'duration': 288.575, 'highlights': ['Differences between ES5 and ES6 standards The chapter covers the scripting standards defined by ECMA, emphasizing the transition from ES5 to ES6 and the impact on syntax changes in creating React components and handling exports and imports.', 'Creating a React app with Node.js and text editor It outlines the steps to create a React app, including installing Node.js, choosing a text editor, and using the command prompt terminal to initiate the creation process.', 'Event handling and synthetic events in React The concept of events and event handlers in React is explained, along with the significance of synthetic events in ensuring consistent behavior across different browsers, reducing complexity in writing browser-specific code.']}], 'duration': 424.75, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8163796.jpg', 'highlights': ['React uses virtual DOM to efficiently update specific components when the state of an object changes, eliminating the need for full page refresh and reducing processing time and simplifying debugging.', 'Advantages of using React over other frameworks include ease of creating dynamic web pages, reusability of components, and unidirectional data flow, resulting in enhanced performance compared to other frameworks.', 'To enable web browsers to read JSX, it needs to be transformed into a regular JavaScript object using a JavaScript API called Babel, which is internally utilized by React.', 'Differences between ES5 and ES6 standards The chapter covers the scripting standards defined by ECMA, emphasizing the transition from ES5 to ES6 and the impact on syntax changes in creating React components and handling exports and imports.', 'Creating a React app with Node.js and text editor It outlines the steps to create a React app, including installing Node.js, choosing a text editor, and using the command prompt terminal to initiate the creation process.', 'Event handling and synthetic events in React The concept of events and event handlers in React is explained, along with the significance of synthetic events in ensuring consistent behavior across different browsers, reducing complexity in writing browser-specific code.']}, {'end': 865.6, 'segs': [{'end': 662.98, 'src': 'embed', 'start': 633.77, 'weight': 0, 'content': [{'end': 640.513, 'text': "so that's the names.map function and finally we return in an unordered list the list names themselves.", 'start': 633.77, 'duration': 6.743}, {'end': 644.375, 'text': 'So the map function will run through and iterate over the list of names.', 'start': 640.874, 'duration': 3.501}, {'end': 645.635, 'text': 'list them in the li tag.', 'start': 644.375, 'duration': 1.26}, {'end': 652.018, 'text': 'the li tag will get injected into the unordered list and will finally get returned out as a stream of HTML elements.', 'start': 645.635, 'duration': 6.383}, {'end': 655.539, 'text': 'In the next code snippet below, we create a constant variable names.', 'start': 652.358, 'duration': 3.181}, {'end': 662.98, 'text': 'We are associating it with a set of five names and we simply say render list of names, names equal to names.', 'start': 655.599, 'duration': 7.381}], 'summary': 'Demonstrates the names.map function to render a list of names in html.', 'duration': 29.21, 'max_score': 633.77, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8633770.jpg'}, {'end': 778.904, 'src': 'embed', 'start': 697.237, 'weight': 1, 'content': [{'end': 701.381, 'text': 'So keys are very important in the code snippet that we saw, due to the following reasons', 'start': 697.237, 'duration': 4.144}, {'end': 707.588, 'text': 'The first reason, the key is a unique identifier if you would want to search for a name in the list.', 'start': 701.742, 'duration': 5.846}, {'end': 712.975, 'text': 'It is used to identify which items have changed, updated or deleted from the list.', 'start': 707.989, 'duration': 4.986}, {'end': 721.503, 'text': 'So if you want to perform CRUD operations, On the data, you would want to search for which element do you want to update or delete or change.', 'start': 712.995, 'duration': 8.508}, {'end': 728.649, 'text': 'It also helps to determine which components need to be re-rendered, instead of re-rendering all the components every time,', 'start': 721.903, 'duration': 6.746}, {'end': 735.195, 'text': 'and it increases performance, as only the changed components have to be re-rendered and not all the components on the page.', 'start': 728.649, 'duration': 6.546}, {'end': 737.457, 'text': 'what are forms in react.', 'start': 735.555, 'duration': 1.902}, {'end': 744.904, 'text': 'so using forms, users can interact with the application and enter required information whenever needed.', 'start': 737.457, 'duration': 7.447}, {'end': 750.43, 'text': 'so forms can contain certain elements such as text fields, buttons, check boxes, radio buttons, etc.', 'start': 744.904, 'duration': 5.526}, {'end': 756.056, 'text': 'and forms are also used for many different tasks such as user authentication, searching, filtering, etc.', 'start': 750.43, 'duration': 5.626}, {'end': 758.357, 'text': 'How do you create a form? Pretty simple.', 'start': 756.576, 'duration': 1.781}, {'end': 763.078, 'text': 'Again, create a custom component called NameFrom that will extend React.Component.', 'start': 758.557, 'duration': 4.521}, {'end': 767.06, 'text': 'We create a state variable, this.state is equal to value.', 'start': 763.258, 'duration': 3.802}, {'end': 772.842, 'text': 'We handle the change by writing a handle change event and we handle the submit by writing a handle submit event.', 'start': 767.16, 'duration': 5.682}, {'end': 778.904, 'text': 'In the change event, we just change the state by saying set state of the value to event.target.value.', 'start': 773.042, 'duration': 5.862}], 'summary': 'Keys are crucial for performance and forms enable user interaction in react.', 'duration': 81.667, 'max_score': 697.237, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8697237.jpg'}], 'start': 588.846, 'title': 'React lists, keys, forms, and performance', 'summary': 'Explores displaying data using the map function in react, highlighting the significance of keys for tracking changes. additionally, it covers form creation and performance optimization by re-rendering only modified components, improving user experience and application efficiency.', 'chapters': [{'end': 712.975, 'start': 588.846, 'title': 'React lists and keys', 'summary': 'Explains how to display data in an ordered format using the map function in react, and emphasizes the importance of keys as unique identifiers for searching and tracking changes in lists.', 'duration': 124.129, 'highlights': ['The map function is used to iterate over a list of names and display them in li tags, which are then injected into an unordered list and returned as HTML elements. The map function iterates over the list of names, displays them in li tags, and returns them as HTML elements.', 'Keys are important as unique identifiers for searching for items in the list and for tracking changes, updates, or deletions. Keys serve as unique identifiers for searching and tracking changes, updates, or deletions in the list.', 'The chapter also explains the usage of a custom HTML element, list of names, which iterates over the provided names using the map function and returns the list as HTML elements. The custom HTML element, list of names, iterates over the provided names using the map function and returns the list as HTML elements.']}, {'end': 865.6, 'start': 712.995, 'title': 'React forms and performance optimization', 'summary': 'Explains how to create forms in react for user interaction and the importance of performance optimization by re-rendering only the changed components, enhancing user experience and application efficiency.', 'duration': 152.605, 'highlights': ['The importance of performance optimization in React by re-rendering only the changed components, increasing application performance and user experience.', 'Creating forms in React to allow user interaction and input of required information, including elements such as text fields, buttons, check boxes, and radio buttons.', 'Detailed steps for creating a form in React using a custom component called NameForm, including handling change and submit events and binding data to the events for user input interaction.']}], 'duration': 276.754, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8588846.jpg', 'highlights': ['The map function iterates over the list of names, displays them in li tags, and returns them as HTML elements.', 'Keys serve as unique identifiers for searching and tracking changes, updates, or deletions in the list.', 'The custom HTML element, list of names, iterates over the provided names using the map function and returns the list as HTML elements.', 'The importance of performance optimization in React by re-rendering only the changed components, increasing application performance and user experience.', 'Creating forms in React to allow user interaction and input of required information, including elements such as text fields, buttons, check boxes, and radio buttons.', 'Detailed steps for creating a form in React using a custom component called NameForm, including handling change and submit events and binding data to the events for user input interaction.']}, {'end': 1232.929, 'segs': [{'end': 956.391, 'src': 'embed', 'start': 905.91, 'weight': 0, 'content': [{'end': 907.792, 'text': 'It is HTML compliant.', 'start': 905.91, 'duration': 1.882}, {'end': 909.894, 'text': 'It generates HTML views.', 'start': 908.112, 'duration': 1.782}, {'end': 914.418, 'text': "It uses CSS for styling and it's based on JavaScript, HTML and CSS.", 'start': 910.054, 'duration': 4.364}, {'end': 918.521, 'text': 'React Native, on the other hand, is targeted to mobility devices.', 'start': 914.638, 'duration': 3.883}, {'end': 921.404, 'text': "It's meant to create installable apps on Android and iOS.", 'start': 918.641, 'duration': 2.763}, {'end': 933.913, 'text': 'released in 2015, not based on HTML and CSS, and it basically requires the ReactJS API to create these installable apps for these mobility ecosystems.', 'start': 921.764, 'duration': 12.149}, {'end': 934.734, 'text': 'How is React?', 'start': 934.113, 'duration': 0.621}, {'end': 937.976, 'text': 'different from Angular, another popular framework by Google?', 'start': 934.734, 'duration': 3.242}, {'end': 942.44, 'text': 'So Angular, created by Google, completely based on the model view controller pattern,', 'start': 938.136, 'duration': 4.304}, {'end': 949.325, 'text': 'works on the real DOM layer and requires a full tree shake at the DOM layer to update views and components.', 'start': 942.44, 'duration': 6.885}, {'end': 951.807, 'text': 'supports bi-directional data binding.', 'start': 949.745, 'duration': 2.062}, {'end': 956.391, 'text': 'The rendering is purely done on the client side, the performance comparatively slow.', 'start': 952.027, 'duration': 4.364}], 'summary': 'React is focused on mobility devices, while angular is based on the model view controller pattern and supports bi-directional data binding.', 'duration': 50.481, 'max_score': 905.91, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8905910.jpg'}, {'end': 1020.022, 'src': 'embed', 'start': 992.895, 'weight': 3, 'content': [{'end': 998.318, 'text': 'So they are building blocks of a react application and a single app usually consists of multiple components.', 'start': 992.895, 'duration': 5.423}, {'end': 1003.902, 'text': 'So it splits the UI into independent reusable pieces that can be processed separately.', 'start': 998.699, 'duration': 5.203}, {'end': 1008.685, 'text': 'A component is essentially a piece of the user interface or the HTML view.', 'start': 1004.122, 'duration': 4.563}, {'end': 1015.579, 'text': 'What is the use of render method So it is compulsory for each component to have a render method.', 'start': 1008.925, 'duration': 6.654}, {'end': 1020.022, 'text': "If not, there wouldn't be any HTML for the component to render on your view.", 'start': 1015.799, 'duration': 4.223}], 'summary': 'Components are the building blocks of a react app, splitting ui into reusable pieces and requiring a render method for html processing.', 'duration': 27.127, 'max_score': 992.895, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8992895.jpg'}, {'end': 1091.469, 'src': 'embed', 'start': 1058.442, 'weight': 4, 'content': [{'end': 1061.884, 'text': 'now, how do you implement state in react?', 'start': 1058.442, 'duration': 3.442}, {'end': 1068.207, 'text': 'so state holds the data that a component renders on the web application.', 'start': 1061.884, 'duration': 6.323}, {'end': 1078.479, 'text': "for example, here we've created in the constructor this dot state equal to, and this temporary anonymous object has two attributes car and pi.", 'start': 1068.207, 'duration': 10.272}, {'end': 1084.644, 'text': 'when we return, we simply return this dot state dot car and this dot state dot pi.', 'start': 1078.479, 'duration': 6.165}, {'end': 1091.469, 'text': 'now this is how you would create stateful components and access the state properties within the view.', 'start': 1084.644, 'duration': 6.825}], 'summary': 'Implement state in react to hold data for rendering components.', 'duration': 33.027, 'max_score': 1058.442, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX81058442.jpg'}, {'end': 1232.929, 'src': 'embed', 'start': 1191.366, 'weight': 5, 'content': [{'end': 1200.209, 'text': 'they cannot be accessed by child components and they cannot have state Props allow to pass data from one component to the other as an argument.', 'start': 1191.366, 'duration': 8.843}, {'end': 1201.37, 'text': 'They are immutable.', 'start': 1200.389, 'duration': 0.981}, {'end': 1208.052, 'text': 'They are read only and props can be accessed by the child component and they can have props as well.', 'start': 1201.61, 'duration': 6.442}, {'end': 1214.294, 'text': 'What is a higher order component in React? So these act as a container for other components.', 'start': 1208.172, 'duration': 6.122}, {'end': 1219.919, 'text': 'which helps in keeping components simple and induces the reusability factor.', 'start': 1214.674, 'duration': 5.245}, {'end': 1224.443, 'text': 'They are generally used when a common logic has to be used by multiple components.', 'start': 1220.079, 'duration': 4.364}, {'end': 1229.247, 'text': "That's when you group together a set of components within a higher order component in React.", 'start': 1224.503, 'duration': 4.744}, {'end': 1232.929, 'text': 'how can you embed two or more components into one?', 'start': 1229.807, 'duration': 3.122}], 'summary': 'Props are immutable data passed between components in react. higher order components act as containers for other components, promoting reusability.', 'duration': 41.563, 'max_score': 1191.366, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX81191366.jpg'}], 'start': 865.933, 'title': 'Arrow function in react & react components overview', 'summary': 'Discusses the use of arrow functions in react for event handling and compares react with react native and angular. it also introduces react components as building blocks of a react application, explaining the use of render method, state, props, and higher order components.', 'chapters': [{'end': 975.469, 'start': 865.933, 'title': 'Arrow function in react & comparison with other frameworks', 'summary': 'Discusses the use of arrow functions in react for event handling and compares react with react native and angular, highlighting differences in release years, target platforms, and architecture.', 'duration': 109.536, 'highlights': ['React Native is targeted for Android and iOS, released in 2015, not based on HTML and CSS, and requires the ReactJS API to create installable apps for mobility ecosystems.', 'React was released in 2013, is HTML compliant, generates HTML views, uses CSS for styling, and is based on JavaScript, HTML, and CSS.', 'Angular, created by Google, works on the real DOM layer, supports bi-directional data binding, and the rendering is purely done on the client side, with slower performance compared to React.js.']}, {'end': 1232.929, 'start': 976.212, 'title': 'React components overview', 'summary': 'Introduces react components as the building blocks of a react application, explaining the use of render method, state, props, and higher order components, along with examples and best practices.', 'duration': 256.717, 'highlights': ['Components are the building blocks of a react application and a single app usually consists of multiple components Explains that a React application is composed of multiple components, emphasizing their role as building blocks for the application.', "State of a component is an object that holds data influencing the output, implemented using the constructor and accessed through state properties within the view Describes the concept of state in React components, showcasing its implementation and usage to influence the component's output.", 'Props allow passing data from one component to the other as an argument, are immutable, read-only, and accessible by the child component Defines the role of props in React, outlining their characteristics and their purpose of passing data between components.', 'Higher order components act as containers for other components, promoting simplicity and reusability, primarily used for common logic shared across multiple components Introduces the concept of higher order components, emphasizing their role as containers and their utility in promoting reusability and simplicity in React applications.', 'Render method is compulsory for each component, returning the HTML to be displayed within the component, and the need to have all elements inside a single parent tag Explains the necessity of the render method in components, emphasizing its role in displaying HTML and the requirement to encapsulate multiple elements within a single parent tag.']}], 'duration': 366.996, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX8865933.jpg', 'highlights': ['React Native released in 2015 for Android and iOS, requires ReactJS API for installable apps', 'React released in 2013, HTML compliant, uses CSS for styling, based on JavaScript, HTML, and CSS', 'Angular by Google, works on real DOM layer, supports bi-directional data binding, rendering purely on client side', 'Components are building blocks of a React application, single app consists of multiple components', 'State of a component holds data influencing the output, implemented using the constructor', 'Props allow passing data between components, immutable, read-only, accessible by child component', 'Higher order components act as containers for other components, promoting simplicity and reusability', 'Render method is compulsory for each component, returns HTML to be displayed, elements inside a single parent tag']}, {'end': 1409.203, 'segs': [{'end': 1276.298, 'src': 'embed', 'start': 1250.959, 'weight': 0, 'content': [{'end': 1258.745, 'text': "So hello simply learn would be the final output, and that's how you can embed one component into the other using this methodology.", 'start': 1250.959, 'duration': 7.786}, {'end': 1261.367, 'text': 'What are the differences between class and functional components?', 'start': 1258.925, 'duration': 2.442}, {'end': 1269.192, 'text': 'So stateful components would extend react component in this case and if you could look at the render, it simply renders this dot props dot title.', 'start': 1261.767, 'duration': 7.425}, {'end': 1276.298, 'text': 'The constant stateless component would be equal to props The div tag returns this dot props dot title.', 'start': 1269.332, 'duration': 6.966}], 'summary': 'Differences between class and functional components in react. stateful components extend react component, while stateless components use props.', 'duration': 25.339, 'max_score': 1250.959, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX81250959.jpg'}, {'end': 1354.698, 'src': 'heatmap', 'start': 1288.429, 'weight': 1, 'content': [{'end': 1294.994, 'text': 'Complex as compared to stateless components can work all of the lifecycle methods of the component and it can be reused.', 'start': 1288.429, 'duration': 6.565}, {'end': 1297.977, 'text': 'The functional component cannot hold or manage state.', 'start': 1295.335, 'duration': 2.642}, {'end': 1299.883, 'text': 'They are simple and easy to understand.', 'start': 1298.238, 'duration': 1.645}, {'end': 1303.195, 'text': 'It does not work with any lifecycle method and it cannot be reused.', 'start': 1300.144, 'duration': 3.051}, {'end': 1306.011, 'text': "Let's explain the lifecycle methods of components.", 'start': 1303.53, 'duration': 2.481}, {'end': 1311.832, 'text': "We've got initial state which is executed before the creation of the component.", 'start': 1306.331, 'duration': 5.501}, {'end': 1316.353, 'text': 'ComponentDidMount which is executed when the component gets rendered and placed on the DOM.', 'start': 1312.072, 'duration': 4.281}, {'end': 1325.435, 'text': 'ShouldComponentUpdate which is invoked when a component decides any changes to the DOM and returns true or false value based on certain conditions.', 'start': 1316.613, 'duration': 8.822}, {'end': 1330.636, 'text': 'ComponentDidUpdate it is invoked immediately after the rendering takes place.', 'start': 1325.775, 'duration': 4.861}, {'end': 1337.022, 'text': 'Component will unmount which is invoked immediately before a component is destroyed and unmounted permanently.', 'start': 1330.996, 'duration': 6.026}, {'end': 1340.105, 'text': "Let's move to the React Redux set of questions.", 'start': 1337.282, 'duration': 2.823}, {'end': 1349.093, 'text': "So what is Redux? It's an open source JavaScript library used to manage application state and React uses Redux for building the user interface.", 'start': 1340.505, 'duration': 8.588}, {'end': 1354.698, 'text': 'What are components of Redux? The first is the store which holds the state of the application.', 'start': 1349.553, 'duration': 5.145}], 'summary': 'Stateful components can handle lifecycle methods, while functional components cannot. redux manages application state and uses store to hold the state.', 'duration': 42.207, 'max_score': 1288.429, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX81288429.jpg'}, {'end': 1392.638, 'src': 'embed', 'start': 1349.553, 'weight': 3, 'content': [{'end': 1354.698, 'text': 'What are components of Redux? The first is the store which holds the state of the application.', 'start': 1349.553, 'duration': 5.145}, {'end': 1361.627, 'text': 'Store contains state which defines the user interface which triggers a set of actions which are then sent to the reducer.', 'start': 1355.018, 'duration': 6.609}, {'end': 1362.648, 'text': 'So store holds.', 'start': 1361.867, 'duration': 0.781}, {'end': 1371.9, 'text': 'the state action is the source information for the store and reducer specifies how the application state changes in response to actions sent to the store.', 'start': 1362.648, 'duration': 9.252}, {'end': 1377.964, 'text': 'What is flux? Well, flux is the application architecture that Facebook uses for building web applications.', 'start': 1372.199, 'duration': 5.765}, {'end': 1379.346, 'text': 'And it works in this way.', 'start': 1378.285, 'duration': 1.061}, {'end': 1382.268, 'text': 'The action is triggered, which is sent to the dispatcher.', 'start': 1379.566, 'duration': 2.702}, {'end': 1384.33, 'text': 'The dispatcher sends it to the store.', 'start': 1382.428, 'duration': 1.902}, {'end': 1389.475, 'text': 'The store sends it to the view and the view sends it back to the action.', 'start': 1384.49, 'duration': 4.985}, {'end': 1392.638, 'text': "And that's exactly how the steps would continue in sequence.", 'start': 1389.515, 'duration': 3.123}], 'summary': 'Redux components: store, state, actions, reducer. flux: architecture for web apps using dispatcher, store, view.', 'duration': 43.085, 'max_score': 1349.553, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX81349553.jpg'}], 'start': 1232.929, 'title': 'React components, lifecycle methods, redux & flux', 'summary': 'Covers embedding components, differences between class and functional components, lifecycle methods, and an overview of redux & flux, including their components and architecture.', 'chapters': [{'end': 1409.203, 'start': 1232.929, 'title': 'React components, lifecycle methods, redux & flux', 'summary': 'Covers embedding components, differences between class and functional components, lifecycle methods, and an overview of redux & flux, including their components and architecture.', 'duration': 176.274, 'highlights': ['The chapter covers embedding components, differences between class and functional components, lifecycle methods, and an overview of Redux & Flux, including their components and architecture.', 'The differences between class and functional components are explained. Class components can hold or manage state, work with all lifecycle methods, and can be reused, while functional components cannot hold or manage state, do not work with any lifecycle method, and cannot be reused.', 'The lifecycle methods of components are detailed, including initial state, componentDidMount, shouldComponentUpdate, componentDidUpdate, and componentWillUnmount.', 'Redux is described as an open source JavaScript library used to manage application state, with its components being the store, actions, and reducer.', 'Flux is explained as the application architecture used by Facebook for building web applications, detailing the sequence of action triggering, dispatcher notification, store triggering, view updating, and user action processing.']}], 'duration': 176.274, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX81232929.jpg', 'highlights': ['The chapter covers embedding components, differences between class and functional components, lifecycle methods, and an overview of Redux & Flux, including their components and architecture.', 'Class components can hold or manage state, work with all lifecycle methods, and can be reused, while functional components cannot hold or manage state, do not work with any lifecycle method, and cannot be reused.', 'The lifecycle methods of components are detailed, including initial state, componentDidMount, shouldComponentUpdate, componentDidUpdate, and componentWillUnmount.', 'Redux is described as an open source JavaScript library used to manage application state, with its components being the store, actions, and reducer.', 'Flux is explained as the application architecture used by Facebook for building web applications, detailing the sequence of action triggering, dispatcher notification, store triggering, view updating, and user action processing.']}, {'end': 1626.667, 'segs': [{'end': 1433.362, 'src': 'embed', 'start': 1409.503, 'weight': 0, 'content': [{'end': 1415.788, 'text': 'How is Redux different from Flux? Redux is an open source JavaScript library used to manage application state.', 'start': 1409.503, 'duration': 6.285}, {'end': 1417.729, 'text': 'The store state is immutable.', 'start': 1416.168, 'duration': 1.561}, {'end': 1421.692, 'text': 'It can only have a single store and it uses the concept of reducer.', 'start': 1417.969, 'duration': 3.723}, {'end': 1425.275, 'text': 'Flux, on the other hand, is an architecture and not a framework or library.', 'start': 1421.992, 'duration': 3.283}, {'end': 1426.916, 'text': 'The store state is mutable.', 'start': 1425.535, 'duration': 1.381}, {'end': 1430.739, 'text': 'It can have multiple stores and it uses the concept of dispatcher.', 'start': 1427.136, 'duration': 3.603}, {'end': 1433.362, 'text': "let's look at some react router questions.", 'start': 1430.739, 'duration': 2.623}], 'summary': 'Redux manages state with single store and reducer, while flux allows multiple stores and uses dispatcher.', 'duration': 23.859, 'max_score': 1409.503, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX81409503.jpg'}, {'end': 1494.523, 'src': 'embed', 'start': 1453.061, 'weight': 1, 'content': [{'end': 1455.482, 'text': 'React Routing has a single HTML page.', 'start': 1453.061, 'duration': 2.421}, {'end': 1462.366, 'text': 'It uses or the end user rather would navigate multiple views within the same file called a single page app.', 'start': 1455.782, 'duration': 6.584}, {'end': 1469.55, 'text': "The page does not refresh since it's a single page file and there is improved performance since you are not navigating across multiple pages.", 'start': 1462.486, 'duration': 7.064}, {'end': 1472.892, 'text': 'Conventional routing, each view is a separate HTML file.', 'start': 1469.89, 'duration': 3.002}, {'end': 1476.153, 'text': 'The user would navigate multiple files for each view.', 'start': 1473.032, 'duration': 3.121}, {'end': 1481.356, 'text': 'The page would refresh every time the user navigates, which would hence result in slower performance.', 'start': 1476.353, 'duration': 5.003}, {'end': 1486.739, 'text': 'How do you implement React Routing? You can implement React Routing using a very simple method.', 'start': 1481.696, 'duration': 5.043}, {'end': 1492.121, 'text': "Considering the above components, let's say you've got a component called app about and contact.", 'start': 1486.979, 'duration': 5.142}, {'end': 1494.523, 'text': 'so here you can specify the route path.', 'start': 1492.121, 'duration': 2.402}], 'summary': 'React routing allows for improved performance by navigating multiple views within a single page app, avoiding the need for refreshing and navigating across multiple html files.', 'duration': 41.462, 'max_score': 1453.061, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX81453061.jpg'}, {'end': 1585.283, 'src': 'embed', 'start': 1516.943, 'weight': 3, 'content': [{'end': 1520.365, 'text': 'either you use inline styling by using simple css,', 'start': 1516.943, 'duration': 3.422}, {'end': 1533.592, 'text': "by simply saying color blue and that's going to be the output of the h1 element or i could use a javascript object by specifying a constant simple style object and specifying a key pair value of color background,", 'start': 1520.365, 'duration': 13.227}, {'end': 1540.616, 'text': 'color margin font family and apply that object as the style parameter which would result in this styled output.', 'start': 1533.592, 'duration': 7.024}, {'end': 1544.339, 'text': 'how do you style react components using a css style sheet?', 'start': 1540.916, 'duration': 3.423}, {'end': 1545.941, 'text': "so here's an external style sheet.", 'start': 1544.339, 'duration': 1.602}, {'end': 1550.665, 'text': "so we've written all the styling rules in a separate css file, app.css.", 'start': 1545.941, 'duration': 4.724}, {'end': 1555.749, 'text': "we've imported that at the top of the app.js react class and lo.", 'start': 1550.665, 'duration': 5.084}, {'end': 1560.013, 'text': 'and behold, you have the output simplified as generated on your page.', 'start': 1555.749, 'duration': 4.264}, {'end': 1563.894, 'text': "Let's explain the use of CSS modules in React.", 'start': 1560.333, 'duration': 3.561}, {'end': 1569.297, 'text': 'So a CSS module file is created .module.css is the extension.', 'start': 1564.015, 'duration': 5.282}, {'end': 1574.719, 'text': 'The CSS inside a module file is available only for the component that is importing it.', 'start': 1569.417, 'duration': 5.302}, {'end': 1576.559, 'text': 'So there are no naming conflicts.', 'start': 1574.879, 'duration': 1.68}, {'end': 1581.141, 'text': 'So .button is the CSS styling inside button.module.css.', 'start': 1576.86, 'duration': 4.281}, {'end': 1585.283, 'text': "And that is what we've imported from in the app.js file.", 'start': 1581.541, 'duration': 3.742}], 'summary': 'Styling in react can be done using inline css, external style sheets, and css modules to avoid naming conflicts.', 'duration': 68.34, 'max_score': 1516.943, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX81516943.jpg'}], 'start': 1409.503, 'title': 'Redux vs flux, react routing, and styling react components with css', 'summary': 'Covers the differences between redux and flux for managing application state, the concept of react routing for single-page web applications, the implementation of react routing, and different methods for styling react components including inline styling, using external style sheets, and the benefits and usage of css modules in react.', 'chapters': [{'end': 1516.943, 'start': 1409.503, 'title': 'Redux vs flux and react routing', 'summary': 'Explains the differences between redux and flux for managing application state, the concept of react routing for single-page web applications, and the implementation of react routing. it also covers the distinction between react routing and conventional routing.', 'duration': 107.44, 'highlights': ['Redux is an open source JavaScript library used to manage application state, with an immutable store state and a single store, while Flux is an architecture with a mutable store state and the ability to have multiple stores. The differences between Redux and Flux lie in their handling of application state and the number of stores allowed. Redux emphasizes immutability and a single store, while Flux supports mutability and multiple stores.', 'React Routing allows for multiple views in a single application by defining multiple routes, leading to improved performance and navigation without page refreshes, as it is designed for single-page web applications. Compared to conventional routing, React Routing offers better performance by enabling multiple views within a single HTML page without the need for page refreshes, leading to improved user experience.', 'The implementation of React Routing involves specifying route paths for different components, such as app, about, and contact, and associating the route paths with the corresponding components. To implement React Routing, one can specify route paths for different components, enabling automatic navigation and activation of specific components based on the URL, thereby facilitating seamless routing in the application.']}, {'end': 1626.667, 'start': 1516.943, 'title': 'Styling react components with css', 'summary': 'Explains different methods for styling react components including inline styling, using external style sheets, and css modules, highlighting the benefits and usage of css modules in react.', 'duration': 109.724, 'highlights': ['The use of CSS modules in React, which prevents naming conflicts and makes the CSS available only for the importing component, is explained, showcasing the styling of a button using a CSS module file.', 'The process of styling React components using an external style sheet (app.css) is demonstrated by importing the styling rules into the app.js react class, resulting in the simplified styled output on the page.', 'The chapter also introduces the concept of inline styling in React, where simple CSS or a JavaScript object with style parameters can be used to style elements, providing a quick and easy way to style components.']}], 'duration': 217.164, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/-dS9pvGqlX8/pics/-dS9pvGqlX81409503.jpg', 'highlights': ['Redux emphasizes immutability and a single store, while Flux supports mutability and multiple stores.', 'React Routing allows for multiple views in a single application by defining multiple routes, leading to improved performance and navigation without page refreshes.', 'The implementation of React Routing involves specifying route paths for different components, such as app, about, and contact, and associating the route paths with the corresponding components.', 'The use of CSS modules in React prevents naming conflicts and makes the CSS available only for the importing component.', 'The process of styling React components using an external style sheet (app.css) is demonstrated by importing the styling rules into the app.js react class.', 'The chapter also introduces the concept of inline styling in React, where simple CSS or a JavaScript object with style parameters can be used to style elements.']}], 'highlights': ['React Routing allows for multiple views in a single application by defining multiple routes, leading to improved performance and navigation without page refreshes.', 'The virtual DOM in React is a lightweight representation that enhances performance by avoiding full page refresh and DOM tree shake, leading to improved speed.', 'React has many extensions for complete application architecture support, with speedy performance and one-way data binding as core features, making it ideal for building user interfaces efficiently.', 'Advantages of using React over other frameworks include ease of creating dynamic web pages, reusability of components, and unidirectional data flow, resulting in enhanced performance compared to other frameworks.', 'The importance of performance optimization in React by re-rendering only the changed components, increasing application performance and user experience.', 'Redux emphasizes immutability and a single store, while Flux supports mutability and multiple stores.', 'The chapter covers embedding components, differences between class and functional components, lifecycle methods, and an overview of Redux & Flux, including their components and architecture.', 'Creating a React app with Node.js and text editor It outlines the steps to create a React app, including installing Node.js, choosing a text editor, and using the command prompt terminal to initiate the creation process.', 'The implementation of React Routing involves specifying route paths for different components, such as app, about, and contact, and associating the route paths with the corresponding components.', 'JSX is an extension used for React, enabling the writing of HTML structures in the same file as JavaScript code, simplifying code updates and modifications.']}