title: Why json response not display.?
body: <p>I a getting undefined value while using ajax.I am using <a href="http://validate.jsontest.com/?json=%7B%22key%22%3a%22value%22%7D" rel="nofollow">http://validate.jsontest.com/?json={%22key%22:%22value%22}</a>
  I call like that in this fiddle.</p>
  
  <p>I use post method in that I use only this url <a href="http://validate.jsontest.com/" rel="nofollow">http://validate.jsontest.com/</a> <strong>strong text</strong>
  <a href="http://jsfiddle.net/3TUvr/" rel="nofollow">http://jsfiddle.net/3TUvr/</a></p>
  
  <pre><code>var formData = {"key":"value"}; //Array 
  
  $.ajax({
      url : "http://validate.jsontest.com/",
      type: "POST",
      data : formData,
      success: function(data, textStatus, jqXHR)
      {                      
        alert(data["empty"]+"data");
      },
      error: function (jqXHR, textStatus, errorThrown)
      {
        alert(jqXHR+"jqXHR");
      }
  });
  </code></pre>