gistfile1.js

var http = require('http');
var url = require('url');

var Router = function(){
  this.routes = {};
  return this;
};
Router.prototype.addRoute = function(route){
  this.routes[route.name] = route;
  return this;
};
Router.prototype.findRoute = function(verb, path, req){
  for(var i in this.routes) if(this.routes[i].verb == verb && this.routes[i].path == path) return this.routes[i].action(req);
};

var Route = function(verb, path, action, name){
  this.verb = verb || 'get';
  this.path = path || '/';
  this.name = name || Route.makePathName(path.substr(1));
  this.action = action;
  return this;
};
Route.makePathName = function(path){
  return path.toLowerCase().split('/').join('_') + '_path';
};

http.createServer(function (req, res) {
  var App = {Router: new Router()};
  App.Router.addRoute({verb: 'get', path: '/', name: 'root_path', action: function(){ return 'Root path'; }});
  App.Router.addRoute({verb: 'get', path: '/hello', name: 'hello_path', action: function(){ return 'HEllo path'; }});
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end(App.Router.findRoute(req.method.toLowerCase(), url.parse(req.url, false).pathname, req));
}).listen();