moment.js testing
HTML
<script src="http://cdnjs.cloudflare.com/ajax/libs/moment.js/2.2.1/moment.min.js"></script>
<div id="results"></div>
JavaScript
$(document).ready(function() {
var userDate = '04.11.2014';
var date_string = moment(userDate, "DD.MM.YYYY").format("YYYY-MM-DD");
$("#results").html(date_string);
});