title: How to sort date array in javascript
body: <p>I have below array of dates and I want to sort it in acceding order. I tried but not getting the positive result.</p>
  
  <pre><code>var arr = [ [ '02/13/2015', 0.096 ],
    [ '11/15/2013', 0.189 ],
    [ '05/15/2014', 0.11 ],
    [ '12/13/2013', 0.1285 ],
    [ '01/15/2013', 0.12 ],
    [ '01/15/2014', 0.11 ],
    [ '02/14/2014', 0.11 ],
    [ '03/14/2014', 0.11 ],
    [ '01/15/2015', 0.096 ],
    [ '07/15/2015', 0.096 ],
    [ '04/15/2013', 0.12 ],
    [ '04/15/2014', 0.11 ],
    [ '05/15/2013', 0.12 ],
    [ '06/14/2013', 0.12 ],
    [ '06/16/2014', 0.11 ],
    [ '07/15/2013', 0.12 ],
    [ '07/15/2014', 0.11 ],
    [ '03/16/2015', 0.096 ]]
  </code></pre>
  
  <p><strong>My Code</strong></p>
  
  <pre><code>arr.sort(function(a,b){
    return new Date(a[0][0]) - new Date(b[0][0]);
  });
  </code></pre>