server.js

let http = require('http');
let url = require('url');
let port = 3000;

let server = http.createServer((request, response) => {
    var page = url.parse(request.url).pathname;
    console.log(page);

    response.writeHead(200, {
        'Content-Type': 'text/plain'
    })
    if (page == '/about') {
        response.write("what do you want to know about me... ? AMA !")
    } else {
        response.write("Hello NodeJS ! Welcome to my home page ;-)")
    }

    response.end()

})

server.listen(port, (err) => {
    if (err)
        return console.log('something bad happened', err)
    console.log(`server is listening on ${port}`)
})