<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<link href="http://code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="Stylesheet"
type="text/css" />
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<script type="text/javascript" src="http://code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
<script language="javascript">
$(document).ready(function () {
$("#txtdate").datepicker({
minDate: 0
});
});
</script>
</head>
<body>
Date :
<input id="txtdate" type="text">
</body>
</html>
$(function(){
var dtToday = new Date();
var month = dtToday.getMonth() + 1;
var day = dtToday.getDate();
var year = dtToday.getFullYear();
if(month < 10)
month = '0' + month.toString();
if(day < 10)
day = '0' + day.toString();
var minDate= year + '-' + month + '-' + day;
$('#txtDate').attr('min', minDate);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="date" id="txtDate" />