title: New Date() returns invalid date
body: <p>I'm trying to calculate a difference between 2 days using jQuery. The input fields are the Bootstrap datepicker ones.</p>
  
  <p>When I console.log the field values, they give me a date an in the format dd-mm-yyyy</p>
  
  <p><strong>Code:</strong></p>
  
  <pre><code>console.log($("#actie_begin").val());
  </code></pre>
  
  <p><strong>Logs</strong>:</p>
  
  <blockquote>
    <p>27/06/2016</p>
  </blockquote>
  
  <p>However when I try to use a <strong><em>new date()</em></strong> (to do the calculations) on it, the variable becomes 'Invalid date'</p>
  
  <p><strong>Code:</strong></p>
  
  <pre><code>var start_date = new Date($("#actie_begin").val());
  </code></pre>
  
  <p><strong>Logs</strong>:</p>
  
  <blockquote>
    <p>Invalid Date</p>
  </blockquote>
  
  <p>How can I solve this?</p>