How to build web server using nodejs

To develop a web server using Node.js, you will need to use the built-in http module. This module provides a simple interface for creating HTTP servers and clients in Node.js.

Here is an example of how to use the http module to create a basic HTTP server that listens for requests on port 3000 and responds with “Hello, World!”:

const http = require('http');

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

server.listen(3000, () => {
  console.log('Listening on port 3000');

To run this server, you can save it to a file called server.js and run it using the node command:

node server.js

This will start the server and listen for incoming requests on port 3000. You can test the server by opening a web browser and navigating to http://localhost:3000. You should see the message “Hello, World!” displayed in the browser.

To handle requests and responses more easily, you can use a web framework such as Express. This framework provides a simple, flexible interface for routing HTTP requests and handling responses. Here is an example of how to use Express to create a basic HTTP server:

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

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

app.listen(3000, () => {
  console.log('Listening on port 3000');

This example uses the app.get method to define a route that listens for GET requests to the root path (/) and responds with the message “Hello, World!”.

Overall, developing a web server using Node.js is relatively straightforward, especially when using a web framework such as Express. You can use the http module or a web framework to create servers that can handle HTTP requests and send responses to clients.