How Express.js works?
What is Express.js? Express.js is a lightweight and flexible web application framework built on **Node.js**. It simplifies the process of building server-side applications by providing powerful features like routing, middleware support, and template engines. How Does It Work? 1. Handle HTTP Requests: - Express acts as a middleware between the client and the Node.js server. - When a client (e.g., a browser or mobile app) sends an HTTP request (GET, POST, PUT, DELETE, etc.), Express processes the request and provides a suitable response. 2. Routing: - Express defines URL-based routes to determine how the server should respond to client requests. For example, if a user accesses `/home` or `/products`, Express decides which code should execute. - Example: ```javascript const express = require('express'); const app = express(); app.get('/home', (req, res) => ...