Node.js Tutorial for Beginners 🌐

Node.js is an open-source server-side platform built on Chrome's V8 JavaScript engine. It allows developers to run JavaScript outside of a browser, making it ideal for building scalable network applications.

Getting Started ✅

1. Install Node.js
   Download from nodejs.org and follow the installation guide for your OS.
2. Verify Installation
   Open terminal and run:

   node -v
   npm -v
   

   📌 Expected output: version numbers for Node.js and npm.

Core Concepts 🧠

• Event Loop: Handles asynchronous operations (⏰)
• Non-blocking I/O: Efficient handling of multiple requests (🔄)
• Modules: Reusable code components (📦)
• npm: Package manager for JavaScript (📦)

Simple Example 🧪

Create a file hello.js with:

const http = require('http');

http.createServer((req, res) => {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello, Node.js!\n');
}).listen(3000, '127.0.0.1');

console.log('Server running at http://127.0.0.1:3000/');

Expand Your Knowledge 🚀

• Advanced Node.js Topics
• Node.js with Express.js
• Building APIs with Node.js