Basic Node.js server with Express.

server.js

var express = require("express");
var app = express();
app.use(express.logger());

app.get('/', function(request, response)
{
  response.send('Hello World!');
});

var port = process.env.PORT || 5000;

app.listen(port, function()
{
  console.log("Listening on " + port);
});