Simple routing URL in node.js

routing.js

var sys = require ('sys'),
url = require('url'),
http = require('http'),
qs = require('querystring');

http.createServer(function (req, res) {

	keyword=/\/keyword\/([A-Za-z0-9]+)$/
	data=/\/keyword\/([A-Za-z0-9]+)\/data\/([A-Za-z0-9]+)$/;

	var url_parts = url.parse(req.url); 
	var current_url=url_parts.pathname;


	if(current_url.match(keyword))
	{
		result=current_url.match(keyword);
		console.log(result);
	}
	else if(current_url.match(data))
	{
		result=current_url.match(data);
		console.log(result);
	}
	else
	{
		console.log(current_url);
	}
	
	res.end();
 
}).listen(1337, "127.0.0.1");