title
Node.js Crash Course

description
In this crash course we will explore Node.js fundamentals including modules such as path, url, fs, events and we will create an HTTP server from scratch without Express and deploy to Heroku. Watch Next: Express Crash Course: https://www.youtube.com/watch?v=L72fhGm1tfE Sponsor: DevMountain Bootcamp https://goo.gl/6q0dEa Code: https://github.com/bradtraversy/node_crash_course 💖 Become a Patron: Show support & get perks! http://www.patreon.com/traversymedia Website & Udemy Courses http://www.traversymedia.com Follow Traversy Media: https://www.facebook.com/traversymedia https://www.twitter.com/traversymedia https://www.instagram.com/traversymedia

detail
{'title': 'Node.js Crash Course', 'heatmap': [{'end': 867.334, 'start': 754.033, 'weight': 1}, {'end': 1083.571, 'start': 1026.094, 'weight': 0.884}], 'summary': 'This crash course on node.js covers its fundamentals, advantages, backend api development, core modules, features, web server creation, and server setup and deployment, highlighting its speed, scalability, and asynchronous nature, with practical examples and emphasis on understanding the process without using frameworks.', 'chapters': [{'end': 401.537, 'segs': [{'end': 137.774, 'src': 'embed', 'start': 108.68, 'weight': 3, 'content': [{'end': 116.546, 'text': 'so essentially, what all this means is we can use javascript as a server-side language, just like we could python, php,', 'start': 108.68, 'duration': 7.866}, {'end': 118.608, 'text': 'c shop or any other programming language.', 'start': 116.546, 'duration': 2.062}, {'end': 122.267, 'text': 'So what should you know before learning node?', 'start': 120.086, 'duration': 2.181}, {'end': 129.69, 'text': 'I would definitely recommend that you learn at least the basics of JavaScript objects, arrays, conditionals all that good stuff.', 'start': 122.787, 'duration': 6.903}, {'end': 137.774, 'text': 'I would also suggest learning some of the newer features ES6 plus like arrow functions, promises, et cetera.', 'start': 131.05, 'duration': 6.724}], 'summary': 'Node.js allows using javascript as a server-side language, recommended to learn basics of javascript and newer features like es6.', 'duration': 29.094, 'max_score': 108.68, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4108680.jpg'}, {'end': 221.181, 'src': 'embed', 'start': 195.729, 'weight': 0, 'content': [{'end': 200.291, 'text': "it's not something you have to know before you start learning node, All right.", 'start': 195.729, 'duration': 4.562}, {'end': 202.012, 'text': 'So why use node?', 'start': 200.411, 'duration': 1.601}, {'end': 207.476, 'text': "Why is it a good choice for server side technology over, let's say, PHP or Python?", 'start': 202.052, 'duration': 5.424}, {'end': 212.06, 'text': "So node is extremely fast, efficient and it's also highly scalable.", 'start': 208.017, 'duration': 4.043}, {'end': 218.284, 'text': "And one of the reasons for that is it's event driven and it runs on a single loop and it's non blocking.", 'start': 212.3, 'duration': 5.984}, {'end': 221.181, 'text': 'Okay, so it has a non-blocking IO model.', 'start': 218.78, 'duration': 2.401}], 'summary': 'Node is fast, efficient, and scalable, with a non-blocking io model.', 'duration': 25.452, 'max_score': 195.729, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4195729.jpg'}, {'end': 263.484, 'src': 'embed', 'start': 239.51, 'weight': 1, 'content': [{'end': 247.475, 'text': 'note is often used with front end frameworks like react view and angular, because it allows you to use the same language on both sides.', 'start': 239.51, 'duration': 7.965}, {'end': 253.278, 'text': 'So, rather than having a JavaScript front end and then like a C sharp or Python back end,', 'start': 247.975, 'duration': 5.303}, {'end': 257.801, 'text': 'you have the same language on both the front end and back end, which can be an advantage.', 'start': 253.278, 'duration': 4.523}, {'end': 263.484, 'text': "All right, so as I mentioned, Node.js is non-blocking and it's asynchronous.", 'start': 259.363, 'duration': 4.121}], 'summary': 'Node.js allows using the same language on both front-end and back-end, making it non-blocking and asynchronous.', 'duration': 23.974, 'max_score': 239.51, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4239510.jpg'}, {'end': 310.089, 'src': 'embed', 'start': 286.89, 'weight': 2, 'content': [{'end': 294.917, 'text': 'So, since these languages are synchronous, it has to essentially sit and wait for one process to complete before starting the next.', 'start': 286.89, 'duration': 8.027}, {'end': 301.482, 'text': "Now, Node.js, on the other hand, works in an asynchronous way and it's non-blocking on a single thread.", 'start': 295.457, 'duration': 6.025}, {'end': 310.089, 'text': "And this single thread can literally support tens of thousands of connections which are held in what's called an event loop.", 'start': 301.922, 'duration': 8.167}], 'summary': 'Node.js is non-blocking, supports thousands of connections on a single thread.', 'duration': 23.199, 'max_score': 286.89, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4286890.jpg'}], 'start': 7.059, 'title': 'Node.js fundamentals and advantages', 'summary': 'Covers node.js fundamentals, core modules, deployment to heroku, and reasons to use node over other server-side technologies, emphasizing its speed, efficiency, scalability, and popularity. it also highlights the advantages of node.js, including its non-blocking and asynchronous nature leading to optimized throughput and scalability, and its suitability for io operations.', 'chapters': [{'end': 239.51, 'start': 7.059, 'title': 'Node.js crash course', 'summary': 'Provides a crash course on node.js, covering its fundamentals, core modules, deployment to heroku, prerequisites for learning node, and reasons to use node over other server-side technologies, emphasizing its speed, efficiency, scalability, and popularity in the industry.', 'duration': 232.451, 'highlights': ['Node.js is a JavaScript runtime that allows using JavaScript as a server-side language, leveraging the V8 JavaScript engine, which is fast and powerful, and can be used for building web servers without using Express or any other framework. Node.js allows using JavaScript as a server-side language, leveraging the V8 JavaScript engine, which is fast and powerful, and can be used for building web servers without using Express or any other framework.', 'It is recommended to learn the basics of JavaScript, including objects, arrays, conditionals, as well as newer features like ES6+, and to have an understanding of HTTP, HTTP codes, headers, REST APIs, microservices, and JSON before learning Node.js. It is recommended to learn the basics of JavaScript, including objects, arrays, conditionals, as well as newer features like ES6+, and to have an understanding of HTTP, HTTP codes, headers, REST APIs, microservices, and JSON before learning Node.js.', 'Node.js is extremely fast, efficient, highly scalable, event-driven, and runs on a single loop with non-blocking IO model, making it a popular choice in the industry, especially for startups, with many full stack job opportunities available. Node.js is extremely fast, efficient, highly scalable, event-driven, and runs on a single loop with non-blocking IO model, making it a popular choice in the industry, especially for startups, with many full stack job opportunities available.']}, {'end': 401.537, 'start': 239.51, 'title': 'Node.js: non-blocking and asynchronous', 'summary': 'Highlights the advantages of node.js, such as using the same language for both front end and back end, its non-blocking and asynchronous nature leading to optimized throughput and scalability, and its suitability for io operations but not for cpu intensive apps.', 'duration': 162.027, 'highlights': ['Node.js allows using the same language for both front end and back end Node.js allows developers to use the same language on both the front end and back end, providing an advantage over having different languages for each side.', 'Node.js is non-blocking and asynchronous, optimizing throughput and scalability Node.js works in an asynchronous way and is non-blocking on a single thread, which allows it to support tens of thousands of connections and optimize throughput and scalability in applications with many IO operations.', 'Node.js is not suitable for CPU intensive apps Node.js is not recommended for CPU intensive apps or long running calculations, as it can block the server and make the application slow.']}], 'duration': 394.478, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx47059.jpg', 'highlights': ['Node.js is extremely fast, efficient, highly scalable, event-driven, and runs on a single loop with non-blocking IO model, making it a popular choice in the industry, especially for startups, with many full stack job opportunities available.', 'Node.js allows using the same language for both front end and back end Node.js allows developers to use the same language on both the front end and back end, providing an advantage over having different languages for each side.', 'Node.js is non-blocking and asynchronous, optimizing throughput and scalability Node.js works in an asynchronous way and is non-blocking on a single thread, which allows it to support tens of thousands of connections and optimize throughput and scalability in applications with many IO operations.', 'It is recommended to learn the basics of JavaScript, including objects, arrays, conditionals, as well as newer features like ES6+, and to have an understanding of HTTP, HTTP codes, headers, REST APIs, microservices, and JSON before learning Node.js.']}, {'end': 705.333, 'segs': [{'end': 451.406, 'src': 'embed', 'start': 402.397, 'weight': 0, 'content': [{'end': 405.8, 'text': 'So like REST APIs and microservices, Node is great for.', 'start': 402.397, 'duration': 3.403}, {'end': 414.406, 'text': "A lot of times you'll be building a backend API with Node where you won't even be serving, for instance, HTML pages.", 'start': 405.82, 'duration': 8.586}, {'end': 415.927, 'text': "You'll be serving JSON.", 'start': 414.706, 'duration': 1.221}, {'end': 420.691, 'text': "You'll do all your database interaction and stuff like that within Node.js.", 'start': 416.628, 'duration': 4.063}, {'end': 423.493, 'text': 'And obviously it works with any database.', 'start': 421.291, 'duration': 2.202}, {'end': 425.334, 'text': 'You can use relational databases.', 'start': 423.593, 'duration': 1.741}, {'end': 427.196, 'text': "However, it's very popular now.", 'start': 425.714, 'duration': 1.482}, {'end': 436.776, 'text': "MongoDB is very popular to use with Node because it's very fast, it's also very scalable, so Node and Mongo actually make a really good team.", 'start': 428.663, 'duration': 8.113}, {'end': 441.878, 'text': 'Real time services, so things like chat applications, Node is great for.', 'start': 437.795, 'duration': 4.083}, {'end': 451.406, 'text': "Crud apps, so blogs, shopping carts, social networks, basically any application where you're just fetching stuff from the database, displaying it,", 'start': 442.339, 'duration': 9.067}], 'summary': 'Node.js is great for building backend apis, serving json, interacting with databases, and is commonly used with mongodb for its speed and scalability. it excels in real-time services like chat applications and crud apps for various purposes.', 'duration': 49.009, 'max_score': 402.397, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4402397.jpg'}, {'end': 535.239, 'src': 'embed', 'start': 470.905, 'weight': 2, 'content': [{'end': 477.581, 'text': "And it's used to install third party packages or modules such as frameworks, libraries, and smaller tools.", 'start': 470.905, 'duration': 6.676}, {'end': 483.464, 'text': 'And when you install a package, it gets stored in a folder called node underscore modules,', 'start': 478.302, 'duration': 5.162}, {'end': 487.246, 'text': 'which will be created automatically when you install something.', 'start': 483.464, 'duration': 3.782}, {'end': 496.03, 'text': 'And then any package or dependency you install will get listed in a file called package.json, which every node project should include.', 'start': 487.826, 'duration': 8.204}, {'end': 501.932, 'text': 'It holds info about your app, like the name, the version, and it also lists all the dependencies,', 'start': 496.09, 'duration': 5.842}, {'end': 505.054, 'text': 'which are packages that your app needs to be able to run.', 'start': 501.932, 'duration': 3.122}, {'end': 513.839, 'text': "okay, you can also create npm scripts to run certain tasks, such as web servers, and we're going to be looking into all of this stuff a little later.", 'start': 505.054, 'duration': 8.785}, {'end': 520.303, 'text': "i do have an entire crash course on npm, where i go deep into all the commands and stuff like that, if you're interested.", 'start': 513.839, 'duration': 6.464}, {'end': 526.096, 'text': 'Some common commands we have npm init, which generates the package.json file.', 'start': 521.355, 'duration': 4.741}, {'end': 531.738, 'text': 'And then if we want to install something, we simply do npm install, and then whatever it is we want to install.', 'start': 526.577, 'duration': 5.161}, {'end': 535.239, 'text': "In this case, it's express, which is a very popular web framework.", 'start': 531.778, 'duration': 3.461}], 'summary': 'Npm is used to install packages, create node_modules folder, and manage dependencies for node projects.', 'duration': 64.334, 'max_score': 470.905, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4470905.jpg'}, {'end': 587.73, 'src': 'embed', 'start': 557.965, 'weight': 5, 'content': [{'end': 561.128, 'text': 'Node has a large set of core modules that it comes with.', 'start': 557.965, 'duration': 3.163}, {'end': 563.75, 'text': "We're going to be looking at a bunch of the common ones.", 'start': 561.728, 'duration': 2.022}, {'end': 567.393, 'text': 'You also have modules or packages that you install with NPM.', 'start': 564.25, 'duration': 3.143}, {'end': 572.237, 'text': 'And then you can also create your own modules, which are simply files that have an export.', 'start': 567.713, 'duration': 4.524}, {'end': 578.082, 'text': 'OK, this way you can include variables, functions, classes or anything else from one file.', 'start': 572.697, 'duration': 5.385}, {'end': 579.603, 'text': 'You can include that in another.', 'start': 578.222, 'duration': 1.381}, {'end': 581.284, 'text': "And we're going to do this.", 'start': 580.123, 'duration': 1.161}, {'end': 582.605, 'text': "We're going to look at the syntax.", 'start': 581.304, 'duration': 1.301}, {'end': 587.73, 'text': 'Basically, you create a variable, you set it to require whatever module you want.', 'start': 583.326, 'duration': 4.404}], 'summary': 'Node has a large set of core modules, additional modules can be installed via npm, and custom modules can be created with an export.', 'duration': 29.765, 'max_score': 557.965, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4557965.jpg'}, {'end': 668.392, 'src': 'embed', 'start': 638.507, 'weight': 6, 'content': [{'end': 642.53, 'text': 'And I just want to show you, before we jump into a text editor and we start creating files,', 'start': 638.507, 'duration': 4.023}, {'end': 646.814, 'text': 'I want to show you that Node comes with something called a REPL, which is a read eval print loop.', 'start': 642.53, 'duration': 4.284}, {'end': 650.717, 'text': 'And it basically allows us to run JavaScript directly in the console.', 'start': 647.154, 'duration': 3.563}, {'end': 656.682, 'text': 'So if we just type in Node, well, first of all, just make sure you have it installed with Node dash dash version.', 'start': 651.377, 'duration': 5.305}, {'end': 658.463, 'text': "And you can see you'll also have NPM.", 'start': 657.042, 'duration': 1.421}, {'end': 663.988, 'text': "as well, all right, but if we go ahead and we just say node, and that's it, and we hit enter,", 'start': 659.564, 'duration': 4.424}, {'end': 668.392, 'text': "it'll bring us into the repl and from here we can actually type in javascript.", 'start': 663.988, 'duration': 4.404}], 'summary': 'Node comes with a repl for running javascript directly in the console.', 'duration': 29.885, 'max_score': 638.507, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4638507.jpg'}], 'start': 402.397, 'title': 'Node.js for building backend apis and introduction to node.js and npm', 'summary': 'Discusses the suitability of node.js for building backend apis, emphasizing its compatibility with various databases and its popularity for real-time services and crud applications. it also covers the basics of node.js and npm, including the purpose of npm, usage of npm commands, installation of packages, creation of npm scripts, modules in node.js, and the use of node.js repl.', 'chapters': [{'end': 451.406, 'start': 402.397, 'title': 'Node.js for building backend apis', 'summary': 'Discusses the suitability of node.js for building backend apis, highlighting its compatibility with various databases and its popularity for real-time services and crud applications.', 'duration': 49.009, 'highlights': ['Node.js is commonly used for building backend APIs, especially for serving JSON and handling database interactions, with MongoDB being particularly popular due to its speed and scalability.', 'Node.js is well-suited for real-time services such as chat applications, as well as CRUD apps like blogs, shopping carts, and social networks, due to its ability to fetch and display data from databases.']}, {'end': 705.333, 'start': 451.406, 'title': 'Introduction to node.js and npm', 'summary': 'Covers the basics of node.js and npm, including the purpose of npm, usage of npm commands, installation of packages, creation of npm scripts, modules in node.js, and the use of node.js repl.', 'duration': 253.927, 'highlights': ['Node.js comes with NPM (Node Package Manager) which is used to install third-party packages or modules such as frameworks, libraries, and smaller tools.', 'The package.json file in a Node project holds information about the app, including the name, version, and dependencies needed for the app to run.', 'NPM allows the creation of scripts to run certain tasks, such as web servers, and provides commands like npm init for generating the package.json file and npm install to install packages.', 'Node.js has a large set of core modules and it also allows the installation of packages via NPM, as well as the creation of custom modules.', 'Node.js includes a REPL (read-eval-print loop) which allows running JavaScript directly in the console for testing and experimentation.']}], 'duration': 302.936, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4402397.jpg', 'highlights': ['Node.js is commonly used for building backend APIs, especially for serving JSON and handling database interactions, with MongoDB being particularly popular due to its speed and scalability.', 'Node.js is well-suited for real-time services such as chat applications, as well as CRUD apps like blogs, shopping carts, and social networks, due to its ability to fetch and display data from databases.', 'Node.js comes with NPM (Node Package Manager) which is used to install third-party packages or modules such as frameworks, libraries, and smaller tools.', 'The package.json file in a Node project holds information about the app, including the name, version, and dependencies needed for the app to run.', 'NPM allows the creation of scripts to run certain tasks, such as web servers, and provides commands like npm init for generating the package.json file and npm install to install packages.', 'Node.js has a large set of core modules and it also allows the installation of packages via NPM, as well as the creation of custom modules.', 'Node.js includes a REPL (read-eval-print loop) which allows running JavaScript directly in the console for testing and experimentation.']}, {'end': 1300.237, 'segs': [{'end': 811.108, 'src': 'embed', 'start': 773.993, 'weight': 1, 'content': [{'end': 774.853, 'text': 'Crash course.', 'start': 773.993, 'duration': 0.86}, {'end': 778.035, 'text': 'Entry point is basically your main file.', 'start': 775.554, 'duration': 2.481}, {'end': 782.417, 'text': "By default, it's index.js, but I've also seen app.js, server.js.", 'start': 778.495, 'duration': 3.922}, {'end': 784.999, 'text': 'Those are some other common file names.', 'start': 782.437, 'duration': 2.562}, {'end': 787.18, 'text': "Test command, we don't need that.", 'start': 785.519, 'duration': 1.661}, {'end': 788.521, 'text': 'Get repository.', 'start': 787.28, 'duration': 1.241}, {'end': 791.562, 'text': 'Author You can put your name.', 'start': 789.361, 'duration': 2.201}, {'end': 794.644, 'text': 'And then license default is ISC.', 'start': 792.603, 'duration': 2.041}, {'end': 795.244, 'text': "That's fine.", 'start': 794.684, 'duration': 0.56}, {'end': 800.287, 'text': "And then we'll hit enter, and it will create a package.json with all that stuff in it.", 'start': 795.664, 'duration': 4.623}, {'end': 801.486, 'text': 'All right.', 'start': 801.206, 'duration': 0.28}, {'end': 811.108, 'text': "Now, the the the biggest purpose of package, I shouldn't say the biggest purpose, but one of the main purposes is to store all your dependencies.", 'start': 801.586, 'duration': 9.522}], 'summary': 'Creating package.json with default settings for managing dependencies.', 'duration': 37.115, 'max_score': 773.993, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4773993.jpg'}, {'end': 908.716, 'src': 'heatmap', 'start': 754.033, 'weight': 0, 'content': [{'end': 757.496, 'text': "is create a package dot Jason file and you don't have to create it manually.", 'start': 754.033, 'duration': 3.463}, {'end': 764.863, 'text': "You can simply run NPM in it and it's going to by default just ask us some questions like the package name.", 'start': 757.917, 'duration': 6.946}, {'end': 768.607, 'text': "So I'll keep the folder name as the default the version hit enter.", 'start': 764.883, 'duration': 3.724}, {'end': 769.988, 'text': "That's good description.", 'start': 768.667, 'duration': 1.321}, {'end': 772.61, 'text': "Let's say node.", 'start': 770.048, 'duration': 2.562}, {'end': 774.853, 'text': 'Crash course.', 'start': 773.993, 'duration': 0.86}, {'end': 778.035, 'text': 'Entry point is basically your main file.', 'start': 775.554, 'duration': 2.481}, {'end': 782.417, 'text': "By default, it's index.js, but I've also seen app.js, server.js.", 'start': 778.495, 'duration': 3.922}, {'end': 784.999, 'text': 'Those are some other common file names.', 'start': 782.437, 'duration': 2.562}, {'end': 787.18, 'text': "Test command, we don't need that.", 'start': 785.519, 'duration': 1.661}, {'end': 788.521, 'text': 'Get repository.', 'start': 787.28, 'duration': 1.241}, {'end': 791.562, 'text': 'Author You can put your name.', 'start': 789.361, 'duration': 2.201}, {'end': 794.644, 'text': 'And then license default is ISC.', 'start': 792.603, 'duration': 2.041}, {'end': 795.244, 'text': "That's fine.", 'start': 794.684, 'duration': 0.56}, {'end': 800.287, 'text': "And then we'll hit enter, and it will create a package.json with all that stuff in it.", 'start': 795.664, 'duration': 4.623}, {'end': 801.486, 'text': 'All right.', 'start': 801.206, 'duration': 0.28}, {'end': 811.108, 'text': "Now, the the the biggest purpose of package, I shouldn't say the biggest purpose, but one of the main purposes is to store all your dependencies.", 'start': 801.586, 'duration': 9.522}, {'end': 820.67, 'text': 'If your application uses something you install from NPM, then it needs to be listed here, because if you move to another computer, another server,', 'start': 811.168, 'duration': 9.502}, {'end': 828.152, 'text': "whatever it may be where you want to run your app, you're going to run NPM install and that's going to install all the packages that are listed.", 'start': 820.67, 'duration': 7.482}, {'end': 828.992, 'text': 'All right.', 'start': 828.732, 'duration': 0.26}, {'end': 835.838, 'text': "So later on, I'm going to be using a very small module called you ID just to generate random IDs.", 'start': 829.152, 'duration': 6.686}, {'end': 840.382, 'text': "So I'll install that now just to show you if I do NPM install you ID.", 'start': 836.218, 'duration': 4.164}, {'end': 852.809, 'text': 'so, as you can see over here, it created a node modules folder and it was put inside of there and if i reload my package.json,', 'start': 844.085, 'duration': 8.724}, {'end': 855.45, 'text': 'you can see it gets added as a dependency.', 'start': 852.809, 'duration': 2.641}, {'end': 860.972, 'text': 'okay, now you can also have dev dependencies, which are dependencies that you just need for development.', 'start': 855.45, 'duration': 5.522}, {'end': 867.334, 'text': "so we're going to be using something called nodemon, which will make it so that we don't have to keep restarting our server,", 'start': 860.972, 'duration': 6.362}, {'end': 869.395, 'text': 'and i want to install that as a dev dependency.', 'start': 867.334, 'duration': 2.061}, {'end': 878.623, 'text': 'so i could say npm install And I could either do dash, dash, save dash, dev and then the name of the module, which is nodemon.', 'start': 869.395, 'duration': 9.228}, {'end': 883.608, 'text': 'But what I like to do is just dash uppercase D, which is a shorter way of doing it.', 'start': 879.104, 'duration': 4.504}, {'end': 890.255, 'text': 'So if we go ahead and run that, it should get added as a dev dependency.', 'start': 884.129, 'duration': 6.126}, {'end': 893.298, 'text': 'All right.', 'start': 893.038, 'duration': 0.26}, {'end': 896.542, 'text': 'So now right here you can see dev dependencies and we have node mon.', 'start': 893.318, 'duration': 3.224}, {'end': 903.77, 'text': "So when you're ready to deploy or move this app somewhere else, you don't include the node modules.", 'start': 897.423, 'duration': 6.347}, {'end': 907.294, 'text': 'You can delete that and then just run NPM install.', 'start': 903.81, 'duration': 3.484}, {'end': 908.716, 'text': "Actually, I'll show you that real quick.", 'start': 907.374, 'duration': 1.342}], 'summary': 'Creating a package.json file with default settings and managing dependencies using npm for a node.js application.', 'duration': 88.046, 'max_score': 754.033, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4754033.jpg'}, {'end': 1083.571, 'src': 'heatmap', 'start': 960.106, 'weight': 5, 'content': [{'end': 966.351, 'text': 'And by the way, everything that we install comes from the npmjs.org repository or website.', 'start': 960.106, 'duration': 6.245}, {'end': 969.014, 'text': "That's where everything is stored in that registry.", 'start': 966.652, 'duration': 2.362}, {'end': 974.414, 'text': "All right, so in index.js, I'm just going to simply do a console.log.", 'start': 970.011, 'duration': 4.403}, {'end': 982.18, 'text': "And let's just say hello from node.js and save.", 'start': 976.356, 'duration': 5.824}, {'end': 989.226, 'text': 'Now I can run this file by simply saying node index.js and it prints it out in the terminal in the console.', 'start': 982.24, 'duration': 6.986}, {'end': 992.989, 'text': "And when we run a file, we don't actually have to put .js.", 'start': 989.986, 'duration': 3.003}, {'end': 995.671, 'text': "So just node index, that'll do the same thing.", 'start': 993.029, 'duration': 2.642}, {'end': 1001.369, 'text': 'All right, so we can run any JavaScript we want from the terminal or any JavaScript file.', 'start': 996.715, 'duration': 4.654}, {'end': 1011.452, 'text': "Now, most of the time, you're going to have multiple files and these, these other files, are basically modules you're going to create,", 'start': 1002.29, 'duration': 9.162}, {'end': 1018.533, 'text': "whether it's a class or a function, or an object, or something that you're going to export to bring in to another file.", 'start': 1011.452, 'duration': 7.081}, {'end': 1019.953, 'text': 'So I want to touch on that.', 'start': 1018.593, 'duration': 1.36}, {'end': 1021.674, 'text': "So let's create a new file.", 'start': 1020.513, 'duration': 1.161}, {'end': 1024.513, 'text': "We'll just call this person dot JS.", 'start': 1021.694, 'duration': 2.819}, {'end': 1044.241, 'text': "And inside here, let's go ahead and create create an object called person and we'll set this object to have a name of John Doe and let's say age 30.", 'start': 1026.094, 'duration': 18.147}, {'end': 1053.366, 'text': 'Now if I want to use this this person object somewhere else I can simply say module dot exports equals person.', 'start': 1044.241, 'duration': 9.125}, {'end': 1064.339, 'text': 'OK, and if I save that and I go back to index JS and I want to bring that in, I can simply create a variable or call it person and set it to require.', 'start': 1054.795, 'duration': 9.544}, {'end': 1074.424, 'text': "And then, since it's a file and not an actual module that we installed or a core node module, we want to put the path, which is dot slash,", 'start': 1064.36, 'duration': 10.064}, {'end': 1076.845, 'text': 'meaning the current folder, and then person.', 'start': 1074.424, 'duration': 2.421}, {'end': 1080.007, 'text': "And then I'll go ahead and console dot log.", 'start': 1077.466, 'duration': 2.541}, {'end': 1083.571, 'text': 'person All right.', 'start': 1082.11, 'duration': 1.461}], 'summary': 'Installing and running javascript files through node.js, creating and using modules in node.js.', 'duration': 84.135, 'max_score': 960.106, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4960106.jpg'}, {'end': 1225.873, 'src': 'embed', 'start': 1198.341, 'weight': 7, 'content': [{'end': 1204.024, 'text': 'Now, it might seem like this file here is just getting run directly like this.', 'start': 1198.341, 'duration': 5.683}, {'end': 1210.827, 'text': "But actually, when you To include a module like this, it's wrapped in what's called a module wrapper function.", 'start': 1204.104, 'duration': 6.723}, {'end': 1213.168, 'text': "I'm just going to paste this in just to show you.", 'start': 1211.267, 'duration': 1.901}, {'end': 1215.048, 'text': "We don't want to run this code.", 'start': 1213.708, 'duration': 1.34}, {'end': 1219.671, 'text': 'This is actually wrapped around all of this.', 'start': 1215.168, 'duration': 4.503}, {'end': 1225.873, 'text': 'We have access to module, require, exports, also the file name and dir name.', 'start': 1219.871, 'duration': 6.002}], 'summary': 'Module is wrapped in a module wrapper function, providing access to module, require, exports, file name, and dir name.', 'duration': 27.532, 'max_score': 1198.341, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx41198341.jpg'}], 'start': 705.353, 'title': 'Node.js fundamentals', 'summary': 'Covers setting up a node.js project, creating a package.json file, installing dependencies, and managing dev dependencies, emphasizing the importance of package.json and demonstrating the use of npm commands. it also covers the basics of node.js, including creating modules, exporting and requiring files, and understanding the module wrapper function, with examples and explanations, demonstrating how to run javascript files and leverage the npmjs.org repository.', 'chapters': [{'end': 931.56, 'start': 705.353, 'title': 'Node crash course', 'summary': 'Covers setting up a node.js project, creating a package.json file, installing dependencies, and managing dev dependencies, emphasizing the importance of package.json and demonstrating the use of npm commands.', 'duration': 226.207, 'highlights': ['The chapter emphasizes the importance of package.json as it stores all the dependencies for the application and allows for easy installation when moving the app to another environment.', "The process of creating a package.json file is outlined, highlighting the use of 'npm init' command to set up the file with essential details like package name, version, description, entry point, author, and license.", "The installation of dependencies is demonstrated using 'npm install' command, with a specific example of installing 'uuid' module and its automatic addition to package.json as a dependency.", "The concept of dev dependencies is explained with the installation of 'nodemon' as a dev dependency, and the distinction between regular dependencies and dev dependencies is highlighted.", "The efficient management of dependencies for deployment is illustrated, emphasizing the exclusion of 'node_modules' folder and the use of 'npm install' based on package.json for deployment or moving the app to another environment."]}, {'end': 1300.237, 'start': 933.733, 'title': 'Node.js basics: modules and file structure', 'summary': 'Covers the basics of node.js, including creating modules, exporting and requiring files, and understanding the module wrapper function, with examples and explanations, demonstrating how to run javascript files and leverage the npmjs.org repository.', 'duration': 366.504, 'highlights': ['Node.js Basics: Modules and File Structure The chapter provides a comprehensive overview of Node.js basics, focusing on modules and file organization, essential for understanding Node.js development.', "Demonstrating how to run JavaScript files with Node.js The tutorial showcases running JavaScript files using Node.js, exemplifying the command 'node index.js' and the elimination of the '.js' extension when running files.", 'Understanding the module wrapper function in Node.js The chapter explains the concept of the module wrapper function in Node.js, highlighting its role in encapsulating modules and providing access to essential module-related objects and variables.', "Creating and exporting modules in Node.js The tutorial demonstrates creating and exporting modules in Node.js, showcasing the creation of a 'person.js' module, exporting objects, classes, and functions, and importing them into other files.", 'Leveraging the npmjs.org repository for Node.js modules The chapter emphasizes the use of the npmjs.org repository for Node.js modules, underlining its significance as a central storage for all dependencies and versions.']}], 'duration': 594.884, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx4705353.jpg', 'highlights': ['The chapter emphasizes the importance of package.json as it stores all the dependencies for the application and allows for easy installation when moving the app to another environment.', "The process of creating a package.json file is outlined, highlighting the use of 'npm init' command to set up the file with essential details like package name, version, description, entry point, author, and license.", "The installation of dependencies is demonstrated using 'npm install' command, with a specific example of installing 'uuid' module and its automatic addition to package.json as a dependency.", "The concept of dev dependencies is explained with the installation of 'nodemon' as a dev dependency, and the distinction between regular dependencies and dev dependencies is highlighted.", "The efficient management of dependencies for deployment is illustrated, emphasizing the exclusion of 'node_modules' folder and the use of 'npm install' based on package.json for deployment or moving the app to another environment.", 'The chapter provides a comprehensive overview of Node.js basics, focusing on modules and file organization, essential for understanding Node.js development.', "Demonstrating how to run JavaScript files with Node.js The tutorial showcases running JavaScript files using Node.js, exemplifying the command 'node index.js' and the elimination of the '.js' extension when running files.", 'Understanding the module wrapper function in Node.js The chapter explains the concept of the module wrapper function in Node.js, highlighting its role in encapsulating modules and providing access to essential module-related objects and variables.', "Creating and exporting modules in Node.js The tutorial demonstrates creating and exporting modules in Node.js, showcasing the creation of a 'person.js' module, exporting objects, classes, and functions, and importing them into other files.", 'Leveraging the npmjs.org repository for Node.js modules The chapter emphasizes the use of the npmjs.org repository for Node.js modules, underlining its significance as a central storage for all dependencies and versions.']}, {'end': 2394.134, 'segs': [{'end': 1330.637, 'src': 'embed', 'start': 1301.818, 'weight': 0, 'content': [{'end': 1305.565, 'text': "person like we would in like, let's say, React or anything ES6.", 'start': 1301.818, 'duration': 3.747}, {'end': 1307.889, 'text': "And that's because Node hasn't implemented this yet.", 'start': 1305.585, 'duration': 2.304}, {'end': 1317.629, 'text': 'If you want to be able to use the syntax for now, you have to actually you have to implement Babel to to compile it to compile to six.', 'start': 1308.604, 'duration': 9.025}, {'end': 1324.693, 'text': "This is the last feature really of six that isn't perfected in node yet.", 'start': 1318.47, 'duration': 6.223}, {'end': 1330.637, 'text': "And I'm hoping that that this that this is available soon, that we can do this.", 'start': 1325.054, 'duration': 5.583}], 'summary': "Node hasn't implemented the es6 syntax yet, so babel is needed to compile to es6.", 'duration': 28.819, 'max_score': 1301.818, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx41301818.jpg'}, {'end': 1411.722, 'src': 'embed', 'start': 1380.71, 'weight': 1, 'content': [{'end': 1386.151, 'text': "it's basically used to work with file directories files in directory paths,", 'start': 1380.71, 'duration': 5.441}, {'end': 1392.974, 'text': 'as you can see and the documentation for these modules is really good because it has all the different methods that are available.', 'start': 1386.151, 'duration': 6.823}, {'end': 1398.595, 'text': 'so, for instance, base name shows you the parameters that it takes, shows you what it returns.', 'start': 1392.974, 'duration': 5.621}, {'end': 1401.957, 'text': 'it shows you an example, So this is very helpful.', 'start': 1398.595, 'duration': 3.362}, {'end': 1403.798, 'text': "And I'm just going to go over some of these.", 'start': 1402.237, 'duration': 1.561}, {'end': 1411.722, 'text': "I'm not going to go over every single method of all of these these modules, but just some stuff that you might run into.", 'start': 1403.818, 'duration': 7.904}], 'summary': 'Python modules facilitate file and directory operations, with detailed documentation and various methods for assistance.', 'duration': 31.012, 'max_score': 1380.71, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx41380710.jpg'}, {'end': 1795.557, 'src': 'embed', 'start': 1767.165, 'weight': 2, 'content': [{'end': 1770.687, 'text': 'Now by default these are asynchronous.', 'start': 1767.165, 'duration': 3.522}, {'end': 1772.428, 'text': 'And let me just show you what I mean.', 'start': 1771.167, 'duration': 1.261}, {'end': 1776.609, 'text': 'So if we go to see file system.', 'start': 1773.208, 'duration': 3.401}, {'end': 1780.051, 'text': 'And this shows us all the different methods.', 'start': 1778.21, 'duration': 1.841}, {'end': 1786.854, 'text': "And if we go to make dir, you'll see that there is make dir, which is the one we're using, which is asynchronous,", 'start': 1780.131, 'duration': 6.723}, {'end': 1788.615, 'text': 'which means that it takes in a callback.', 'start': 1786.854, 'duration': 1.761}, {'end': 1791.616, 'text': 'So anything you want to do after you put in your callback.', 'start': 1789.155, 'duration': 2.461}, {'end': 1795.557, 'text': 'However, there is a synchronous version of most of these methods.', 'start': 1792.096, 'duration': 3.461}], 'summary': 'File system methods are asynchronous by default, with a synchronous version available for most methods.', 'duration': 28.392, 'max_score': 1767.165, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx41767165.jpg'}, {'end': 1941.616, 'src': 'embed', 'start': 1912.885, 'weight': 3, 'content': [{'end': 1922.653, 'text': "Now we can also create files and there is there's a method called open that you can use to create a file.", 'start': 1912.885, 'duration': 9.768}, {'end': 1929.218, 'text': 'However, if you want to write to it right away, you can use write file and that will create it and write to it.', 'start': 1923.274, 'duration': 5.944}, {'end': 1934.703, 'text': "So let's go ahead and say create and write to file.", 'start': 1929.739, 'duration': 4.964}, {'end': 1940.415, 'text': "So let's actually copy this, because all of these are pretty similar.", 'start': 1936.551, 'duration': 3.864}, {'end': 1941.616, 'text': "They're all asynchronous.", 'start': 1940.455, 'duration': 1.161}], 'summary': "Demonstrates creating and writing files using 'open' and 'write file' methods, all of which are asynchronous.", 'duration': 28.731, 'max_score': 1912.885, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx41912885.jpg'}], 'start': 1301.818, 'title': 'Node.js and its core modules', 'summary': "Covers node.js and es6 syntax, the usage of node's core modules including the path module, file system module, and working with files and os module. it also emphasizes the need for babel to compile es6 syntax in node.js and provides practical examples and explanations of key methods and asynchronous nature of certain operations.", 'chapters': [{'end': 1356.109, 'start': 1301.818, 'title': 'Node.js and es6 syntax', 'summary': "Discusses the unavailability of es6 syntax in node.js and the need to use babel to compile it, as node hasn't perfected this feature yet.", 'duration': 54.291, 'highlights': ["Node.js hasn't implemented ES6 syntax, requiring the use of Babel to compile it.", "The last feature of ES6 that isn't perfected in Node.js is discussed.", 'The method of module in Node.js is referred to as common JS, while the ES6 method is also mentioned.']}, {'end': 1705.896, 'start': 1357.61, 'title': 'Node.js core modules and path module', 'summary': "Covers the usage of node's core modules, specifically focusing on the path module. it demonstrates the usage of key methods like basename, dirname, extname, parse, and join, providing practical examples and explanations.", 'duration': 348.286, 'highlights': ['The path module is used to work with file directories and paths, providing methods such as basename, dirname, extname, parse, and join, which are demonstrated with practical examples.', "The basename method retrieves the base file name, allowing for the isolation of the file name from the path, demonstrated with a specific file name resulting in 'path demo JS'.", 'The dirname method retrieves the directory name from the file path, demonstrated with a specific file path resulting in the directory name.', "The extname method retrieves the file extension from the file name, demonstrated with a specific file name resulting in '.js'.", 'The parse method creates an object with different parts of the path, including root directory, base, extension, and name, allowing for access to specific parts of the path.', 'The join method concatenates paths, providing a reliable way to combine directory and file names, demonstrated with specific directory and file names resulting in the combined path.']}, {'end': 1912.745, 'start': 1705.896, 'title': 'Node.js file system module', 'summary': 'Demonstrates using the path module for file path manipulation and creating a folder using the fs module, emphasizing the asynchronous nature of the make dir method in node.js.', 'duration': 206.849, 'highlights': ['Demonstrating the asynchronous nature of make dir method in Node.js The make dir method in the FS module is asynchronous, taking a callback, and there is also a synchronous version of the method called make dir sync.', 'Creating a folder using the FS module in Node.js The demonstration shows how to create a folder on the system using the FS module in Node.js, and it includes handling possible errors and logging a success message.', 'Using the path module for file path manipulation The chapter introduces the use of the path module for file path manipulation in Node.js, specifically using the path.join method.']}, {'end': 2394.134, 'start': 1912.885, 'title': 'Working with files and os module', 'summary': "Demonstrates how to create, write, append, read, and rename files using the 'fs' module, and provides an overview of using the 'os' module to obtain platform, cpu architecture, and cpu core information.", 'duration': 481.249, 'highlights': ["File Operations: Write, Append, Read, and Rename The chapter explains the use of 'writeFile' to create and write to a file, 'appendFile' to add content to a file, 'readFile' to read from a file, and 'rename' to rename a file, showcasing asynchronous file handling with code examples.", "OS Module: Platform, CPU Architecture, and CPU Core Info The 'os' module is utilized to obtain platform information using 'platform', CPU architecture using 'arc', and CPU core details using 'cpus', with practical demonstrations and code snippets."]}], 'duration': 1092.316, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx41301818.jpg', 'highlights': ["Node.js hasn't implemented ES6 syntax, requiring the use of Babel to compile it.", 'The path module is used to work with file directories and paths, providing methods such as basename, dirname, extname, parse, and join, which are demonstrated with practical examples.', 'Demonstrating the asynchronous nature of make dir method in Node.js The make dir method in the FS module is asynchronous, taking a callback, and there is also a synchronous version of the method called make dir sync.', "File Operations: Write, Append, Read, and Rename The chapter explains the use of 'writeFile' to create and write to a file, 'appendFile' to add content to a file, 'readFile' to read from a file, and 'rename' to rename a file, showcasing asynchronous file handling with code examples."]}, {'end': 3331.036, 'segs': [{'end': 2469.529, 'src': 'embed', 'start': 2435.734, 'weight': 0, 'content': [{'end': 2436.234, 'text': 'Run that.', 'start': 2435.734, 'duration': 0.5}, {'end': 2438.015, 'text': "So here's the free memory.", 'start': 2436.715, 'duration': 1.3}, {'end': 2439.856, 'text': "Here's the total memory of my system.", 'start': 2438.035, 'duration': 1.821}, {'end': 2440.737, 'text': 'Yours will be different.', 'start': 2439.876, 'duration': 0.861}, {'end': 2444.959, 'text': 'We can also get, for instance, the home directory.', 'start': 2442.578, 'duration': 2.381}, {'end': 2450.041, 'text': 'So we can say OS dot home.', 'start': 2444.979, 'duration': 5.062}, {'end': 2459.866, 'text': "And run that and you'll see that my home directory is user slash Brad Traversy.", 'start': 2455.864, 'duration': 4.002}, {'end': 2464.949, 'text': "And then last thing I'm going to show you is the uptime, which is the amount of time your system has been up.", 'start': 2460.307, 'duration': 4.642}, {'end': 2469.529, 'text': "So let's do os.uptime.", 'start': 2465.675, 'duration': 3.854}], 'summary': "Demonstration of accessing system information using python's os module.", 'duration': 33.795, 'max_score': 2435.734, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx42435734.jpg'}, {'end': 2572.257, 'src': 'embed', 'start': 2537.07, 'weight': 1, 'content': [{'end': 2545.415, 'text': "so let's put some parameters in here, like id equals 100 and status equals active,", 'start': 2537.07, 'duration': 8.345}, {'end': 2549.078, 'text': "because a lot of times you're going to work with urls that have parameters like this.", 'start': 2545.415, 'duration': 3.663}, {'end': 2554.602, 'text': 'So first thing I want to show you how to do is get the serialized URL.', 'start': 2550.178, 'duration': 4.424}, {'end': 2563.871, 'text': 'So basically get the straight up URL and we can use the object we created dot href.', 'start': 2554.642, 'duration': 9.229}, {'end': 2567.194, 'text': 'So we can use that property.', 'start': 2565.572, 'duration': 1.622}, {'end': 2572.257, 'text': "So we'll run node URL underscore demo.", 'start': 2568.536, 'duration': 3.721}], 'summary': 'Demonstrate how to get the serialized url with parameters like id=100 and status=active using node url demo.', 'duration': 35.187, 'max_score': 2537.07, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx42537070.jpg'}, {'end': 2874.69, 'src': 'embed', 'start': 2845.229, 'weight': 2, 'content': [{'end': 2852.035, 'text': 'So, essentially we can create an event emitter, an event emitter class,', 'start': 2845.229, 'duration': 6.806}, {'end': 2859.421, 'text': "and then we can emit events and have listeners that listen for those events and then do something when they're fired off.", 'start': 2852.035, 'duration': 7.386}, {'end': 2861.823, 'text': "So it's kind of hard to explain.", 'start': 2859.541, 'duration': 2.282}, {'end': 2863.585, 'text': 'So let me give you some examples.', 'start': 2861.903, 'duration': 1.682}, {'end': 2874.37, 'text': "I'm going to go ahead and create in reference a new file called event underscore demo dot J.S.", 'start': 2865.526, 'duration': 8.844}, {'end': 2874.69, 'text': 'All right.', 'start': 2874.37, 'duration': 0.32}], 'summary': 'Create an event emitter class to emit events and have listeners respond to them.', 'duration': 29.461, 'max_score': 2845.229, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx42845229.jpg'}], 'start': 2394.194, 'title': 'Node.js features', 'summary': 'Covers system information retrieval, url module, and event handling in node.js, including retrieving system data, working with urls, and implementing event-driven architecture, with specific examples and practical applications.', 'chapters': [{'end': 2469.529, 'start': 2394.194, 'title': 'System information retrieval', 'summary': 'Explains how to retrieve system information using node.js, including obtaining free memory, total memory, home directory, and system uptime, with examples of the specific commands and their outputs.', 'duration': 75.335, 'highlights': ['The chapter demonstrates using Node.js to retrieve system information such as free memory, total memory, home directory, and system uptime.', "Using the 'OS' module in Node.js, the 'free mem' command retrieves the amount of free memory, while the 'total mem' command obtains the total memory of the system.", "The 'OS' module also allows accessing the home directory using the 'OS.home' command, which returns the specific directory path.", "Another feature showcased is the retrieval of system uptime using the command 'os.uptime', providing the amount of time the system has been running."]}, {'end': 2811.074, 'start': 2472.132, 'title': 'Node.js url module', 'summary': 'Demonstrates how to work with urls in node.js, including getting the serialized url, extracting the host and hostname, accessing the pathname, retrieving query parameters, adding and looping through parameters, showcasing the practical application of the url module.', 'duration': 338.942, 'highlights': ['The chapter demonstrates how to work with URLs in Node.js, including getting the serialized URL, extracting the host and hostname, accessing the pathname, retrieving query parameters, adding and looping through parameters. The chapter covers various operations such as getting the serialized URL, extracting the host and hostname, accessing the pathname, retrieving query parameters, adding and looping through parameters in Node.js.', 'The URL module in Node.js is used to work with URLs, and the deprecated URL.parse is replaced with instantiating a new URL object. The URL module in Node.js is utilized to work with URLs, replacing the deprecated URL.parse with instantiating a new URL object.', 'The chapter showcases practical application by adding and looping through parameters, demonstrating the manipulation of URL parameters in Node.js. Practical application of the URL module is demonstrated by adding and looping through parameters, showcasing the manipulation of URL parameters in Node.js.']}, {'end': 3331.036, 'start': 2811.814, 'title': 'Understanding node.js events', 'summary': 'Explains the concept of event emitters in node.js, demonstrating how to create and handle events using the event emitter class, and provides examples of creating a logger with event emitters and using uuid to generate unique ids for the messages, showcasing the practical implementation of event-driven architecture in node.js.', 'duration': 519.222, 'highlights': ['The chapter explains the concept of event emitters in Node.js and demonstrates how to create and handle events using the event emitter class. The majority of the node core API is built around idiomatic asynchronous event-driven architecture, where emitters emit named events that cause function objects or listeners to be called.', 'Examples of creating a logger with event emitters and using UUID to generate unique IDs for the messages are provided, showcasing the practical implementation of event-driven architecture in Node.js. A practical example is shown where a logger class is created, extending the event emitter, and a method called log is used to raise an event, generating a unique ID using UUID for each message.']}], 'duration': 936.842, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx42394194.jpg', 'highlights': ['The chapter demonstrates using Node.js to retrieve system information such as free memory, total memory, home directory, and system uptime.', 'The chapter demonstrates how to work with URLs in Node.js, including getting the serialized URL, extracting the host and hostname, accessing the pathname, retrieving query parameters, adding and looping through parameters.', 'The chapter explains the concept of event emitters in Node.js and demonstrates how to create and handle events using the event emitter class.']}, {'end': 3951.451, 'segs': [{'end': 3598.746, 'src': 'embed', 'start': 3557.32, 'weight': 0, 'content': [{'end': 3563.424, 'text': "However, I think it's it's a good thing to understand how to do this without express,", 'start': 3557.32, 'duration': 6.104}, {'end': 3568.208, 'text': 'at least just load basic web pages of different content types and so on.', 'start': 3563.424, 'duration': 4.784}, {'end': 3574.592, 'text': "So we're going to be using all all core node modules.", 'start': 3569.048, 'duration': 5.544}, {'end': 3576.113, 'text': "So let's bring in HTTP.", 'start': 3574.652, 'duration': 1.461}, {'end': 3585.598, 'text': "And let's also bring in path.", 'start': 3581.676, 'duration': 3.922}, {'end': 3591.282, 'text': "And let's bring in FS.", 'start': 3589.921, 'duration': 1.361}, {'end': 3598.746, 'text': "OK, so now we're kind of putting everything together that we've learned.", 'start': 3594.864, 'duration': 3.882}], 'summary': 'Learning to build web pages using core node modules and putting concepts into practice.', 'duration': 41.426, 'max_score': 3557.32, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx43557320.jpg'}, {'end': 3951.451, 'src': 'embed', 'start': 3919.455, 'weight': 2, 'content': [{'end': 3924.118, 'text': "OK, so we're using NPM to run this script right here, which will run node mon.", 'start': 3919.455, 'duration': 4.663}, {'end': 3928.862, 'text': "And now you can see that it's running on 5000.", 'start': 3925.679, 'duration': 3.183}, {'end': 3935.848, 'text': 'Now if I go back to index and I change this back to home and save, NodeMon is continuously watching it.', 'start': 3928.862, 'duration': 6.986}, {'end': 3937.95, 'text': 'So if I reload, it changes.', 'start': 3935.888, 'duration': 2.062}, {'end': 3941.553, 'text': "I don't have to manually control C and restart it.", 'start': 3938.01, 'duration': 3.543}, {'end': 3944.996, 'text': 'So NodeMon is an excellent tool.', 'start': 3942.473, 'duration': 2.523}, {'end': 3947.418, 'text': 'So back to our code here.', 'start': 3945.976, 'duration': 1.442}, {'end': 3951.451, 'text': 'Instead of doing this.', 'start': 3949.149, 'duration': 2.302}], 'summary': 'Using npm to run the script, nodemon watches changes, eliminating manual restart. running on port 5000.', 'duration': 31.996, 'max_score': 3919.455, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx43919455.jpg'}], 'start': 3331.036, 'title': 'Creating a basic web server in node.js', 'summary': 'Covers the process of creating a basic web server in node.js using the http module, emphasizing the importance of understanding the process without using frameworks like express. it also explains specifying the port, using nodemon for automatic server restart, and the importance of environment variables and npm scripts.', 'chapters': [{'end': 3598.746, 'start': 3331.036, 'title': 'Creating a basic web server in node.js', 'summary': 'Covers the process of creating a basic web server in node.js using the http module, showcasing the creation of a simple server and the importance of understanding the process without using frameworks like express.', 'duration': 267.71, 'highlights': ['The chapter covers the process of creating a basic web server in Node.js using the HTTP module It demonstrates the step-by-step process of using the HTTP module to create a basic web server, providing practical insights into server creation.', 'Showcasing the creation of a simple server The chapter provides a detailed walkthrough of creating a minimal web server using Node.js, emphasizing the essential components and functions required for server implementation.', 'Importance of understanding the process without using frameworks like Express It emphasizes the significance of comprehending server creation without relying on frameworks like Express, highlighting the core concepts and modules in Node.js for handling web server functionalities.']}, {'end': 3951.451, 'start': 3598.746, 'title': 'Creating a node.js server', 'summary': 'Explains how to create a node.js server, specifying the port and using nodemon for automatic server restart, emphasizing the importance of environment variables and npm scripts.', 'duration': 352.705, 'highlights': ['Creating a server object using HTTP.createServer() and listening on a specified port using server.listen(). HTTP.createServer(), server.listen()', 'Explaining the use of environment variables and process.env.port for dynamic port assignment. process.env.port', 'Demonstrating the use of nodemon for automatic server restart during development. nodemon', 'Setting up npm scripts for start and dev, with dev using nodemon for continuous monitoring. npm scripts, nodemon']}], 'duration': 620.415, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx43331036.jpg', 'highlights': ['The chapter covers the process of creating a basic web server in Node.js using the HTTP module, providing practical insights into server creation.', 'Emphasizes the significance of comprehending server creation without relying on frameworks like Express, highlighting the core concepts and modules in Node.js for handling web server functionalities.', 'Demonstrating the use of nodemon for automatic server restart during development and setting up npm scripts for start and dev.']}, {'end': 5406.565, 'segs': [{'end': 4022.041, 'src': 'embed', 'start': 3980.447, 'weight': 0, 'content': [{'end': 3993.833, 'text': "which I don't even think it will say yeah, it doesn't even say, but we want this type to be HTML, so we can add a content type by saying res, dot,", 'start': 3980.447, 'duration': 13.386}, {'end': 4006.359, 'text': 'write head, so basically right to the headers, and we want this to be a 200 response, which means everything is OK,', 'start': 3998.971, 'duration': 7.388}, {'end': 4018.632, 'text': 'and then pass along the content type and we want to set the content type to text slash HTML.', 'start': 4006.359, 'duration': 12.273}, {'end': 4021.02, 'text': 'All right.', 'start': 4020.68, 'duration': 0.34}, {'end': 4022.041, 'text': "So let's save that.", 'start': 4021.04, 'duration': 1.001}], 'summary': 'Using res.writehead to set html content type for 200 response.', 'duration': 41.594, 'max_score': 3980.447, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx43980447.jpg'}, {'end': 4109.804, 'src': 'embed', 'start': 4083.288, 'weight': 1, 'content': [{'end': 4089.292, 'text': "So we have two HTML pages in the public folder, which right now they're not getting loaded in any way.", 'start': 4083.288, 'duration': 6.004}, {'end': 4090.032, 'text': "They're just there.", 'start': 4089.352, 'duration': 0.68}, {'end': 4100.599, 'text': 'So what I want to do is if the request URL is slash, I want to load the home page so I could use the FS module.', 'start': 4090.893, 'duration': 9.706}, {'end': 4104.281, 'text': "I'm just going to I'll go right above this for now.", 'start': 4101.599, 'duration': 2.682}, {'end': 4109.804, 'text': 'So use the FS module dot read file.', 'start': 4105.042, 'duration': 4.762}], 'summary': 'Two html pages in public folder need to be loaded using fs module.', 'duration': 26.516, 'max_score': 4083.288, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx44083288.jpg'}, {'end': 4365.322, 'src': 'embed', 'start': 4335.153, 'weight': 2, 'content': [{'end': 4342.981, 'text': "OK. so if you were to build some kind of microservice, some kind of rest API, you could do this, but you'd probably use express or something like that.", 'start': 4335.153, 'duration': 7.828}, {'end': 4344.883, 'text': "I'm just showing you how to do it with just node.", 'start': 4343.001, 'duration': 1.882}, {'end': 4352.309, 'text': "okay, so this really isn't very efficient, like we're gonna stick to.", 'start': 4346.443, 'duration': 5.866}, {'end': 4356.173, 'text': "we're gonna stick to just serving html files and so on.", 'start': 4352.309, 'duration': 3.864}, {'end': 4365.322, 'text': "however, this isn't efficient because every single page we want to add we would have to do you know if this or whatever and also we need to be able to handle,", 'start': 4356.173, 'duration': 9.149}], 'summary': 'Demonstrating building a microservice with node, highlighting efficiency concerns.', 'duration': 30.169, 'max_score': 4335.153, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx44335153.jpg'}, {'end': 4424.251, 'src': 'embed', 'start': 4381.413, 'weight': 3, 'content': [{'end': 4383.655, 'text': "So we're going to go under all that stuff we just did.", 'start': 4381.413, 'duration': 2.242}, {'end': 4390.279, 'text': 'Now, I want to make the file path dynamic.', 'start': 4385.456, 'duration': 4.823}, {'end': 4391.94, 'text': 'So let me show you what I mean.', 'start': 4390.819, 'duration': 1.121}, {'end': 4403.971, 'text': "I'm going to say build file path and we're going to create a variable here called file path and set it to path.", 'start': 4391.96, 'duration': 12.011}, {'end': 4412.595, 'text': 'Join the current directory name.', 'start': 4407.893, 'duration': 4.702}, {'end': 4415.556, 'text': 'And then public.', 'start': 4412.615, 'duration': 2.941}, {'end': 4424.251, 'text': "And then let's say basically I want to set this to the request URL.", 'start': 4417.583, 'duration': 6.668}], 'summary': 'Making the file path dynamic by joining current directory and public, and setting it to the request url.', 'duration': 42.838, 'max_score': 4381.413, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx44381413.jpg'}, {'end': 4573.355, 'src': 'embed', 'start': 4542.087, 'weight': 4, 'content': [{'end': 4548.081, 'text': "so that'll give us the the extension of the file that's that's being loaded Okay or being sent.", 'start': 4542.087, 'duration': 5.994}, {'end': 4551.002, 'text': "Now we'll set a content type.", 'start': 4548.781, 'duration': 2.221}, {'end': 4553.584, 'text': "Let's set the initial content type.", 'start': 4551.022, 'duration': 2.562}, {'end': 4563.649, 'text': "So let content type is going to be by default text slash HTML because that's what we mostly expect.", 'start': 4554.604, 'duration': 9.045}, {'end': 4573.355, 'text': "However, we want to check the extension and then set the content type and we'll use a switch statement for that.", 'start': 4564.41, 'duration': 8.945}], 'summary': 'Setting default content type as text/html with switch statement', 'duration': 31.268, 'max_score': 4542.087, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx44542087.jpg'}, {'end': 4703.34, 'src': 'embed', 'start': 4673.588, 'weight': 6, 'content': [{'end': 4675.568, 'text': "And in most cases that's what it's going to mean.", 'start': 4673.588, 'duration': 1.98}, {'end': 4678.569, 'text': "So let's say page not found.", 'start': 4675.648, 'duration': 2.921}, {'end': 4685.271, 'text': 'So the way that I want to handle this, you could handle it however you want, but I want to load an error page.', 'start': 4680.248, 'duration': 5.023}, {'end': 4689.093, 'text': "So in my public folder, I'm going to create a file called 404.html.", 'start': 4685.611, 'duration': 3.482}, {'end': 4700.899, 'text': "And I'm just going to copy one of these HTML pages and simply say in the title not found, we'll say 404 not found.", 'start': 4689.333, 'duration': 11.566}, {'end': 4703.34, 'text': 'Obviously, you would have this be much more stylish.', 'start': 4700.979, 'duration': 2.361}], 'summary': 'Create a 404.html error page for page not found.', 'duration': 29.752, 'max_score': 4673.588, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx44673588.jpg'}, {'end': 4907.057, 'src': 'embed', 'start': 4873.926, 'weight': 5, 'content': [{'end': 4877.487, 'text': "So let's start at the top, which is right here.", 'start': 4873.926, 'duration': 3.561}, {'end': 4878.767, 'text': 'Actually, the top is up here.', 'start': 4877.527, 'duration': 1.24}, {'end': 4882.088, 'text': "We're creating a server that gets a request and response.", 'start': 4878.888, 'duration': 3.2}, {'end': 4886.63, 'text': "OK, every time a file is sent, then we're going to.", 'start': 4882.329, 'duration': 4.301}, {'end': 4891.391, 'text': "we're basically going to look in the public folder and we're going to evaluate whatever this is.", 'start': 4886.63, 'duration': 4.761}, {'end': 4892.492, 'text': 'request dot URL.', 'start': 4891.391, 'duration': 1.101}, {'end': 4894.472, 'text': "If it's slash, we're going to load the index.", 'start': 4892.532, 'duration': 1.94}, {'end': 4899.474, 'text': "If not, we're going to load whatever that file is called about HTML contact, whatever.", 'start': 4894.952, 'duration': 4.522}, {'end': 4907.057, 'text': "OK, then we're going to get the extension and we're going to evaluate the extension and set the content type based on that.", 'start': 4900.174, 'duration': 6.883}], 'summary': 'Creating a server that processes requests and responses, loading files from a public folder based on the request url and evaluating file extensions for content type.', 'duration': 33.131, 'max_score': 4873.926, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx44873926.jpg'}, {'end': 5067.402, 'src': 'embed', 'start': 5043.226, 'weight': 7, 'content': [{'end': 5050.49, 'text': "it's a text html and if we want to look at the css, it's a 200 response and the content type is text css.", 'start': 5043.226, 'duration': 7.264}, {'end': 5052.891, 'text': "so you want to make sure you're giving the right status codes.", 'start': 5050.49, 'duration': 2.401}, {'end': 5057.734, 'text': "you're giving the right content types, because now you're working server side.", 'start': 5052.891, 'duration': 4.843}, {'end': 5067.402, 'text': "okay, if you've been working as a front-end developer with, you know react or view and so on, You probably have been just on the side.", 'start': 5057.734, 'duration': 9.668}], 'summary': 'Adhere to correct status codes and content types for server-side development.', 'duration': 24.176, 'max_score': 5043.226, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx45043226.jpg'}, {'end': 5118.55, 'src': 'embed', 'start': 5091.919, 'weight': 9, 'content': [{'end': 5095.903, 'text': "So the last thing I'd like to do is just a simple deployment to Heroku.", 'start': 5091.919, 'duration': 3.984}, {'end': 5106.948, 'text': "And the main thing to remember as far as the code that we've written is the port you want to use this process and the port.", 'start': 5096.904, 'duration': 10.044}, {'end': 5115.689, 'text': 'OK You also want to make sure that you have your start script as node and then index or whatever your main file name is.', 'start': 5107.508, 'duration': 8.181}, {'end': 5118.55, 'text': 'OK Because Heroku is going to look at those things.', 'start': 5116.349, 'duration': 2.201}], 'summary': 'Deploy code to heroku using specified port and start script.', 'duration': 26.631, 'max_score': 5091.919, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx45091919.jpg'}, {'end': 5230.25, 'src': 'embed', 'start': 5199.108, 'weight': 8, 'content': [{'end': 5204.351, 'text': 'Now, the way that we the way that we push to Heroku is with Git.', 'start': 5199.108, 'duration': 5.243}, {'end': 5206.072, 'text': 'So you need Git installed.', 'start': 5204.591, 'duration': 1.481}, {'end': 5212.796, 'text': "If you don't have Git installed, just go to Git dash SCM dot com.", 'start': 5206.612, 'duration': 6.184}, {'end': 5214.717, 'text': 'Go ahead and download and install it.', 'start': 5213.056, 'duration': 1.661}, {'end': 5216.458, 'text': 'Make sure you have it.', 'start': 5215.617, 'duration': 0.841}, {'end': 5222.725, 'text': 'OK And then we want to initialize a git repository.', 'start': 5219.182, 'duration': 3.543}, {'end': 5226.487, 'text': "Now, I don't want to push my node modules folder.", 'start': 5222.785, 'duration': 3.702}, {'end': 5230.25, 'text': "In fact, I don't want to push my reference or anything like that either.", 'start': 5226.527, 'duration': 3.723}], 'summary': 'To push to heroku with git, install git, initialize a repository, and exclude certain files.', 'duration': 31.142, 'max_score': 5199.108, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx45199108.jpg'}], 'start': 3951.451, 'title': 'Node.js server setup and deployment', 'summary': 'Covers setting content type for html pages, using dynamic file paths, handling errors, and deploying to heroku. it also recommends using express for efficiency in larger-scale applications.', 'chapters': [{'end': 4380.913, 'start': 3951.451, 'title': 'Setting content type and serving html pages', 'summary': 'Covers setting the content type to text/html to ensure proper rendering, creating a public folder for html files, using the fs module to load html pages based on the request url, and serving json content for a rest api, with a recommendation for efficiency using express for a larger-scale application.', 'duration': 429.462, 'highlights': ["Setting the content type to text/HTML and ensuring a 200 response The chapter emphasizes setting the content type to text/HTML and ensuring a 200 response for proper rendering of HTML pages, demonstrated by adding 'res.writeHead(200, {'Content-Type': 'text/HTML'})' and verifying the status and content type in the response.", "Creating a Public folder and loading HTML pages based on request URL using the FS module The process of creating a Public folder for storing HTML files and using the FS module to load HTML pages based on the request URL is explained, with a demonstration of reading the file using 'fs.readFile' and serving it with the appropriate content type and status.", "Serving JSON content for a rest API and recommending the use of Express for efficiency The chapter discusses serving JSON content for a rest API by hard-coding a user array and using 'res.end(JSON.stringify(users))' with the application/json content type, along with a recommendation for using Express for more efficient handling of multiple page types and resources."]}, {'end': 4634.067, 'start': 4381.413, 'title': 'Dynamic file path and content type', 'summary': 'Discusses creating a dynamic file path to load different files based on the request url, setting the content type based on file extensions using a switch statement, and reading the file using fs.file.readfile.', 'duration': 252.654, 'highlights': ["The chapter demonstrates creating a dynamic file path to load different files based on the request URL, such as loading about.html for '/about' and index.html for '/', using a ternary operator to handle root directory.", 'It explains setting the content type based on file extensions using a switch statement, handling various file types like JS, CSS, JSON, PNG, and JPEG.', 'The chapter also covers reading the file using fs.file.readfile by passing in the file path.']}, {'end': 5091.038, 'start': 4635.067, 'title': 'Creating node server and handling errors', 'summary': "Explains how to create a node server that handles requests, checks for specific errors, and serves appropriate responses, including loading a 404 page for 'page not found' errors and handling css files.", 'duration': 455.971, 'highlights': ['Creating a server that evaluates the request URL and loads corresponding files from the public folder based on the URL, handling different file types and extensions. The server is designed to evaluate the request URL and load corresponding files from the public folder, considering different file types and extensions.', "Implementing error handling by checking for specific error codes, such as E-N-O-E-N-T for 'page not found', and serving a 404 page when the error code matches. Specific error codes, such as E-N-O-E-N-T for 'page not found', are checked, and a 404 page is served when the error code matches.", 'Demonstrating the inclusion of CSS files and ensuring correct handling of status codes and content types for server-side responses. The demonstration includes the inclusion of CSS files and emphasizes the importance of ensuring correct handling of status codes and content types for server-side responses.']}, {'end': 5406.565, 'start': 5091.919, 'title': 'Deploying node.js app to heroku', 'summary': 'Demonstrates how to deploy a node.js app to heroku, including installing heroku cli, initializing a git repository, pushing the app to heroku, and accessing the deployed app via a url.', 'duration': 314.646, 'highlights': ['The chapter explains the process of deploying a Node.js app to Heroku, including key steps such as installing Heroku CLI, initializing a Git repository, and pushing the app to Heroku. Deploying Node.js app to Heroku, installing Heroku CLI, initializing Git repository, pushing app to Heroku', 'The speaker emphasizes the importance of setting the correct port and start script in the code to ensure successful deployment to Heroku. Importance of correct port and start script for deployment', 'The chapter highlights the use of Git for pushing the app to Heroku, requiring Git to be installed and initialized for the process. Using Git for pushing app to Heroku, requirement of Git installation and initialization']}], 'duration': 1455.114, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/fBNz5xF-Kx4/pics/fBNz5xF-Kx43951451.jpg', 'highlights': ['Setting the content type to text/HTML and ensuring a 200 response for proper rendering of HTML pages', 'Creating a Public folder for storing HTML files and using the FS module to load HTML pages based on the request URL', 'Serving JSON content for a rest API and recommending the use of Express for efficiency', 'Creating a dynamic file path to load different files based on the request URL', 'Explaining setting the content type based on file extensions using a switch statement', 'Creating a server that evaluates the request URL and loads corresponding files from the public folder based on the URL', 'Implementing error handling by checking for specific error codes and serving a 404 page when the error code matches', 'Demonstrating the inclusion of CSS files and ensuring correct handling of status codes and content types for server-side responses', 'Deploying Node.js app to Heroku, including key steps such as installing Heroku CLI, initializing a Git repository, and pushing the app to Heroku', 'Emphasizing the importance of setting the correct port and start script in the code to ensure successful deployment to Heroku', 'Highlighting the use of Git for pushing the app to Heroku, requiring Git to be installed and initialized for the process']}], 'highlights': ['Node.js is extremely fast, efficient, highly scalable, event-driven, and runs on a single loop with non-blocking IO model, making it a popular choice in the industry, especially for startups, with many full stack job opportunities available.', 'Node.js allows using the same language for both front end and back end Node.js allows developers to use the same language on both the front end and back end, providing an advantage over having different languages for each side.', 'Node.js is non-blocking and asynchronous, optimizing throughput and scalability Node.js works in an asynchronous way and is non-blocking on a single thread, which allows it to support tens of thousands of connections and optimize throughput and scalability in applications with many IO operations.', 'Node.js is commonly used for building backend APIs, especially for serving JSON and handling database interactions, with MongoDB being particularly popular due to its speed and scalability.', 'Node.js is well-suited for real-time services such as chat applications, as well as CRUD apps like blogs, shopping carts, and social networks, due to its ability to fetch and display data from databases.', 'Node.js comes with NPM (Node Package Manager) which is used to install third-party packages or modules such as frameworks, libraries, and smaller tools.', 'The package.json file in a Node project holds information about the app, including the name, version, and dependencies needed for the app to run.', 'The chapter emphasizes the importance of package.json as it stores all the dependencies for the application and allows for easy installation when moving the app to another environment.', "The process of creating a package.json file is outlined, highlighting the use of 'npm init' command to set up the file with essential details like package name, version, description, entry point, author, and license.", "The installation of dependencies is demonstrated using 'npm install' command, with a specific example of installing 'uuid' module and its automatic addition to package.json as a dependency.", "The concept of dev dependencies is explained with the installation of 'nodemon' as a dev dependency, and the distinction between regular dependencies and dev dependencies is highlighted.", "The efficient management of dependencies for deployment is illustrated, emphasizing the exclusion of 'node_modules' folder and the use of 'npm install' based on package.json for deployment or moving the app to another environment.", "Node.js hasn't implemented ES6 syntax, requiring the use of Babel to compile it.", 'The path module is used to work with file directories and paths, providing methods such as basename, dirname, extname, parse, and join, which are demonstrated with practical examples.', 'The chapter covers the process of creating a basic web server in Node.js using the HTTP module, providing practical insights into server creation.', 'Emphasizes the significance of comprehending server creation without relying on frameworks like Express, highlighting the core concepts and modules in Node.js for handling web server functionalities.', 'Setting the content type to text/HTML and ensuring a 200 response for proper rendering of HTML pages', 'Creating a Public folder for storing HTML files and using the FS module to load HTML pages based on the request URL', 'Serving JSON content for a rest API and recommending the use of Express for efficiency', 'Creating a dynamic file path to load different files based on the request URL', 'Explaining setting the content type based on file extensions using a switch statement', 'Creating a server that evaluates the request URL and loads corresponding files from the public folder based on the URL', 'Implementing error handling by checking for specific error codes and serving a 404 page when the error code matches', 'Demonstrating the inclusion of CSS files and ensuring correct handling of status codes and content types for server-side responses', 'Deploying Node.js app to Heroku, including key steps such as installing Heroku CLI, initializing a Git repository, and pushing the app to Heroku', 'Emphasizing the importance of setting the correct port and start script in the code to ensure successful deployment to Heroku', 'Highlighting the use of Git for pushing the app to Heroku, requiring Git to be installed and initialized for the process']}