Setup a basic node-server

server.js

/* Previous Considerations
 * ------------------------------- */
//a. It is necessary nodejs must be installed on pc/linux or mac.
//b. This server runs on 127.0.0.1:8081. You can access :
//    - by console with '$ node main.js' 
//    - by browser by goint to http://127.0.0.1:8081/

/* The very basic server
 * -------------------------------*/
// 1. Import required modules
var http = require("http");
// 2. Create a server
http.createServer(function(request,response){
	// Send the HTTP header 
	response.writeHead(200,{'Content-Type':'text/plain'});
	// Send the response body as "Hello World"
	response.end('Hello World\n');
}).listen(8081);

console.log('Server Running at http://127.0.0.1:8081');