title: jQuery json parse: Get incorrect value in field 1
body: <p>I've trying to parse an JSON-Request from the server which look like this:</p>
  
  <pre><code>{"data": [[1399621731000, 11], [1399555314000, 5], [1399461551000, 1]]}
  </code></pre>
  
  <p>When i get the data from the server with this:</p>
  
  <pre><code>$.ajax({
      url: someURL,
      type: "GET",
      dataType: "json",
      success: function(data){
          console.log(data.data);
      }
  });
  </code></pre>
  
  <p>Sometimes i get an empty value at position 1:</p>
  
  <pre><code>0: Array[2]
  1: 0
  2: Array[2]
  </code></pre>
  
  <p>If I refresh the page a several time in only a few request i get the right value. The server request is always the same. It is really confusing.</p>
  
  <p>I tried it with several jQuery an the $.getJSON function but nothing works.
  Currently i use jQuery  1.10 and test it with Google Chrome.</p>
  
  <p>How can I fix this?</p>