Nodejs Guide

How to Create an HTTP Server in Node.js?

1. Definition

In Node.js, an HTTP server is created using the built-in http module. It allows you to handle client requests and send responses over the web.

2. Steps to Create Server

Import http module
Create server using createServer()
Handle request and response
Start server using listen()

3. Example

const http = require("http");

const server = http.createServer((req, res) => {
  res.writeHead(200, { "Content-Type": "text/plain" });
  res.end("Hello World");
});

server.listen(3000, () => {
  console.log("Server running at http://localhost:3000");
});

4. How it Works

Client sends request to server
Server processes request
Server sends response back

5. Output

Open browser → http://localhost:3000

Output:
Hello World

6. Advantages

Simple and lightweight
No external libraries needed
Good for learning backend basics
Highly scalable