hellowworld.js

var sys = require('sys'),
   http = require('http');
http.createServer(function (req, res) {
  setTimeout(function () {
    res.sendHeader(200, {'Content-Type': 'text/plain'});
    res.sendBody('Hello World');
    res.finish();
  }, 2000);
}).listen(3000);
sys.puts('Server running at http://127.0.0.1:3000/');