JAVASCRIPT

node js server

const express = require('express')
const app = express()
const port = 3000

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

app.listen(port, () => console.log(`Example app listening at http://localhost:${port}`))

Node.js Web Server

var http = require('http');

http.createServer(function (req, res) {
	res.write('Hello World!');
    res.end();
}).listen(8080);