title: How to get the last element of a json file with jquery
body: <pre><code> $.getJSON('./file-read?filename='+filename+'&amp;parameter='+parameter, function(data) {
  var firstElement = data[0][0];
  var lastElement =  ?
  });
  </code></pre>
  
  <p>I try to find out the last Element in my JSON file.</p>
  
  <p>My JSON File looks like this:</p>
  
  <pre><code>[[1392418800000,6.9],[1392419400000,7],[1392420000000,7.1],[1392420600000,7.2],[1392421200000,7.2]]
  </code></pre>
  
  <p>can anybody help me to read extract the last date(1392421200000) ?</p>