title: delete null value from json
body: <p>I am working on JSON, now i have new issue create, when i'm delete an item from JSON it will delete the all item on that index after this on that place null are inserted now my problem is i want also index of that JSON object</p>
  
  <p>Demo <a href="http://jsfiddle.net/subhash9/LjgcK/23/" rel="nofollow"><code>Here</code></a></p>
  
  <p>In this Fiddle these step follow (Please follow this step):</p>
  
  <ol>
  <li>Add item in cart</li>
  <li>Now click on Go to cart.</li>
  <li>Now click delete button</li>
  </ol>
  
  <p>A alert box generate, see the first index of JSON it will be show null, i want delete that index from JSON</p>