Example 1-9. A Hello World Node.js web server

gistfile1.js

// From: OReilly - Node Up and Running - Scalable Server-Side Code with Javascript
var http = require('http');
http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end('Hello World\n');
}).listen(8124, "127.0.0.1");
console.log('Server running at http://127.0.0.1:8124/');