index.js

const http = require( 'http' )

// import 'fs' a file system module which
// helps interact with files on our server
const fs = require('fs')

// The 'readFileSync' method from 'fs'
// reads the content of each file and returns it.
const homePage = fs.readFileSync('index.html')
const aboutPage = fs.readFileSync('about.html')
const contactPage = fs.readFileSync('contact.html')
const notFoundPage = fs.readFileSync('404.html')

const server = http.createServer( ( req, res ) => {
	
	console.log( req.url )

	switch ( req.url ) {

		case '/about':
		res.end(aboutPage)
		break;

		case '/contact':
		res.end(contactPage)
		break;

		case '/':
		res.end(homePage)
		break;

		default:
		res.writeHead(404)
		res.end(notFoundPage)
	}

} )

server.listen(3000)