jQuery Date Picker Input Date Format

http://stackoverflow.com/questions/11104933/jquery-date-picker-input-date-format

HTML

<link rel="stylesheet" href="https://code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
<script src="https://code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<div id="editann-1" class="unhidden">
  <form  role="form" action="/editannouncement/1/" method="post">
    <input name="csrfmiddlewaretoken" value="AbTEZYmK1RF9yeom1C34IFFCj3EBrOD3" type="hidden">
    <div class="form-group">
      <label class="col-sm-2 control-label" for="id_description">Edit Description</label>
      <div class="col-sm-10">
        <textarea class="form-control" cols="40" id="id_description" name="description" rows="10"></textarea>
      </div>
    </div>
    <div class="form-group">
      <label class="col-sm-2 control-label" for="id_end_date">Expires</label>
      <div class="col-sm-10">
        <input class="datepicker form-control" name="end_date"  id="end_date" type="text">
      </div>
    </div>
    <div class="form-group">
      <div class="col-sm-offset-2 col-sm-10">
        <button type="submit" name="edit_announcement" class="btn btn-primary">Save</button>
        <br>
        <br>
      </div>
    </div>
  </form>
</div>
<div id="editann-2" class="unhidden">
  <form  role="form" action="/editannouncement/2/" method="post">
    <input name="csrfmiddlewaretoken" value="AbTEZYmK1RF9yeom1C34IFFCj3EBrOD3" type="hidden">
    <div class="form-group">
      <label class="col-sm-2 control-label" for="id_description">Edit Description</label>
      <div class="col-sm-10">
        <textarea class="form-control" cols="40" id="id_description" name="description" rows="10"></textarea>
      </div>
    </div>
    <div class="form-group">
      <label class="col-sm-2 control-label" for="id_end_date">Expires</label>
      <div class="col-sm-10">
        <input class="datepicker form-control" name="end_date" id end_date type="text">
      </div>
    </div>
    <div class="form-group">
      <div class="col-sm-offset-2...

JavaScript

$(function() {
  $(".datepicker").datepicker({
      changeMonth: true,
      changeYear: true,
  });
});