The function passed into the http.createServer() has a req argument that represents the request from the client, as an object (http.IncomingMessage object). This object has a property called "url" which holds the part of the url that comes after the domain name: var http = require('http'); http.createServer(function (req, res) { res.writeHead(200, {'Content-Type': 'text/html'}); res.write(req.url); res.end(); }).listen(8080); Save the code

What is a Module in Node.js? Consider modules to be the same as JavaScript libraries. A set of functions you want to include in your application. Built-in Modules Node.js has a set of built-in modules which you can use without any further installation. Look at our Built-in Modules Reference for a complete list of modules. Include Modules