Express.js Tutorial : A Comprehensive Guide to Building Web Applications

Express.js Tutorial

A Comprehensive Guide to Building Web Applications

1. What Is Express JS?

Express.js is a fast, minimalistic web framework for Node.js that helps build web applications and APIs.

const express = require('express');
const app = express();

2. Setting Up An Express Server

Install Express using NPM. Create a basic server that listens on a port.

const express = require('express');
const app = express();

app.get('/', (req, res) => {
  res.send('Hello World');
});

app.listen(3000, () => {
  console.log('Server Running On Port 3000');
});

3. Handling Routes In Express

Routes define how your application responds to client requests. Express provides methods to handle different HTTP methods like GET, POST, PUT, DELETE.

app.get('/home', (req, res) => {
  res.send('Welcome To Home Page');
});

app.post('/login', (req, res) => {
  res.send('Logging In...');
});

02 January Tags : backend , coding , express