title: How to call AJAX when new notification comes with codeigniter and nodejs
body: <p>Currently I've notification system in my current application and which is working with AJAX call in SetInterval what I want is to now implement same with nodejs, if any new notification comes then node should call that AJAX or something similar to that, I never worked with NodeJS before but by some learing I write some codes but I would like to know little more about its event and how to do it.</p>
  
  <p>Currently I'm calling nodejs from PHP like this :</p>
  
  <pre><code>&lt;?php echo `node node-server/server.js` ?&gt;
  </code></pre>
  
  <p>and NodeJS code :</p>
  
  <pre><code>var http = require('http');
  var sockjs = require('sockjs');
  var echo = sockjs.createServer();
  var server = http.createServer();
  echo.installHandlers(server, {prefix:'/notification'});
  server.listen(9999, 'localhost');
  </code></pre>
  
  <p>its giving me message :</p>
  
  <blockquote>
    <p>SockJS v0.3.5 bound to "/notification"</p>
  </blockquote>
  
  <p>But its not enough for my purpose, please let me know what more I've to do for it ?</p>
  
  <p>TIA</p>