RE: LeoThread 2024-12-28 05:31

[ahmadmanga]

Learning Node.js for Full Stack Development

Node.js is a valuable skill for full stack web developers, and its relevance is not expected to change anytime soon, despite the emergence of new technologies like Deno.

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[ahmadmanga]

Introduction to Node.js

• 📚 Node.js is a runtime that allows developers to run JavaScript on a server, making it possible to write full stack applications in a single language.
• 💻 Node.js was first released in 2009 and has since revolutionized web development by allowing developers to use JavaScript for both front-end and back-end development.
• 📝 Node.js is not a programming language, but rather a JavaScript runtime built on Chrome's V8 JavaScript engine.

Installing Node.js

• 📊 Node.js can be installed on Windows, Mac, or Linux, and is likely already installed on your system.
• 📈 To check if Node.js is installed, run the command node -v in the terminal.
• 📁 To manage different Node.js versions, use a package like Node Version Manager (NVM).

[ahmadmanga]

Getting Started with Node.js

• 🎉 To get started with Node.js, create a new file called index.js and add the code console.log('Hello World').
• 📝 Run the code using the command node index.js or node . if you're in the same directory.
• 📚 Node.js has a built-in REPL (Read-Eval-Print Loop) mode that allows you to execute JavaScript code in real-time.

Understanding the Node.js Runtime

• 🤔 Node.js has a handful of built-in identifiers, including console, global, and process.
• 📊 The global object is a namespace that is available throughout the entire Node.js process.
• 📈 The process object gives you access to the currently running Node.js process and allows you to check the current platform, operating system, and environment variables.

[ahmadmanga]

Working with Events in Node.js

• 📅 Node.js is an asynchronous event-driven JavaScript runtime that uses an event loop to handle intensive operations.
• 📝 Events can come in many forms, including the exit event that is emitted when a Node.js process finishes.
• 📈 You can listen to events using the on method and register a callback function to handle the event.

Working with the File System in Node.js

• 📁 Node.js has a built-in file system module called fs that allows you to read, write, and delete files.
• 📝 You can read a file using the readFile method, which can be either blocking or non-blocking.
• 📈 You can also use promises to read files, which can make your code more concise and readable.

[ahmadmanga]

Using Modules in Node.js

• 📦 A module is a JavaScript file that exports its code, and Node.js has a number of built-in modules, including fs and events.
• 📈 You can import a module using the require function, which is the traditional way to import modules in Node.js.
• 📊 Node.js also supports ES modules, which use the import and export syntax.

Deploying a Node.js App to the Cloud

• 🌫️ To deploy a Node.js app to the cloud, you can use a service like Google App Engine, which provides a standard environment for Node.js.
• 📝 You'll need to create an app.yaml file to configure your cloud server and specify a runtime of Node.js version 12.
• 📈 You can then deploy your app using the gcloud app deploy command, which will give you a URL where you can access your app publicly on the web.