Nodejs with handlers in javascript

We can point site URL to a specific handler, created by nodejs(server side javascript). Hummm, Sounds exceptional. Let’s see.   We are able to create a server in previous post. Have you noticed request and response in the code? Request object contains all the Request properties. URL (string) is one of it. [In previously it was uri(object).]  From the url property we can get the requested url path and according to that we can handle the request as per plan. Pretty simple. Now see the code[written in notepad, you can use any other editor] -

var http = require('http');

var sys = require('util');

 var server = http.createServer(function(req, res) {

  switch (req.url) { //check the request url

    case '/’:

      display_home(req, res); //pointing handler

      break;

    case '/registration’: 

      display_registration (req, res);

      break;

    default:

      show_404(req, res);//no handler found

      break;

  }

});

server.listen(8088);

//====== Server generation and handler pointing is done======

//==========First handler===============

function display_ home (req, res) {

//======response type set=========

  res.writeHead(200, {'Content-Type': 'text/html'});

//=======response content============== 

res.end(

    '<div> This is your home page</div><a  href=”/registration”> Click to register</a><a  href=”/nothing”> nothing</a>'

  );

}

//========Second handler=================

function display_ registration (req, res) {

  res.writeHead(200, {'Content-Type': 'text/html'});

  res.end(

    '<div> This is your registration page</div>'

  );

}

//==========Error handler==========

function show_404(req, res) {

  res.writeHead(404, {'Content-Type': 'text/plain'});

  res.end('No handler found');

 

}

Save the code with js extension. Run this with node command  as shown in previous post and traverse through your first nodeJs site.

Let me know your quires.

Enjoy.