Converting an HTML5 Date Picker value to a JavaScript Date object might not produce the result you expect. These gists demonstrate how you can create the Date object at GMT or your local time zone.

htb-html5-date-picker-1.html

<script>
  $(document).ready(function() { 
		$("#execute").bind("click", function() {
			var dateString = $("#date").val();
			var date = new Date(dateString);
			$("#dateObject").text(date.toString());
		});
	});
</script>

<input id="date" type="date" name="date1" value="2013-02-14" />
<input id="execute" type="button" value="Create Date object" />
<span id="dateObject">(date will dump here)</span>

htb-html5-date-picker-2.html

<script>
  $(document).ready(function() { 
		$("#execute").bind("click", function() {
			var dateString = $("#date").val().replace(/-/g, "/");
			var date = new Date(dateString);
			$("#dateObject").text(date.toString());	
		});
	});
</script>

<input id="date" type="date" name="date1" value="2013-02-14" />
<input id="execute" type="button" value="Replace hyphens and create Date object" />
<span id="dateObject">(date will dump here)</span>