What is Node.js? Node.js is a free, open source tool that lets you run JavaScript outside the web browser. With Node.js, you can build fast and scalable applications like web servers, APIs, …

RESTful API with Express One of the most common Node.js applications is building RESTful APIs. Here's an example of a simple but practical Todo API with Express:

The W3Schools online code editor allows you to edit code and view the result in your browser

Getting Started Once you have installed Node.js, let's create your first server that says "Hello World!" in a web browser. Create a file called myfirst.js and add this code: myfirst.js

Save the code above in a file called "demo_create_table.js" and run the file: Run "demo_create_table.js"

What is a Package? A package in Node.js contains all the files you need for a module. Modules are JavaScript libraries you can include in your project.

JavaScript Example: <button onclick="myFunction ()"> Click Me! </button> <script> function myFunction () { let x = document.getElementById("demo"); x.style.fontSize = "25px"; …

Getting Started with Express Express can be added to any Node.js project. Here's how to get started with a new Express application.

The Node.js File System module (fs) provides a comprehensive set of methods for working with the file system on your computer. It allows you to perform file I/O operations in both …

Creating a WebSocket Client Now that we have a WebSocket server, let's create clients to connect to it. We'll create both a Node.js client and a browser client. 1. Node.js Client Create a …