Node.js Modules

Node.js uses modules to organize code into smaller, reusable pieces. Modules work exactly like JavaScript libraries. Node.js comes with several built-in modules that let you create servers or read files without downloading anything extra.

1/* this includes a module */
2var http = require('http');
3
4http.createServer(function (req, res) {
5  res.writeHead(200, {'Content-Type': 'text/plain'});
6  res.end('Hello!');
7}).listen(8080);