Simple HTTP Server in NodeJS

Node.js uses an event-driven, non-blocking model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devicesThis simple web server written in Node responds with “Hello World” for every request. To run the server, put the code into a file example.js and execute it with the node program from the command line.

var http = require('http');
http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end('Hello Worldn');
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

NodeSchool is a fantastic resource for learning about Node.js and the related ecosystem around Node. There are a series of curricula which are designed with a choose your own adventure style. They are meant to help you learn core concepts of Node.js but it also provides a framework for creating your own curriculum.