Minimal node application

minimal-node.js

var http = require('http');
http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('It works!\n');
}).listen(9000, "127.0.0.1");
console.log('Server running at http://127.0.0.1:9000/');