$(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 maxDate = year + '-' + month + '-' + day;
alert(maxDate);
$('#txtDate').attr('min', maxDate);
});<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script type="text/javascript">
window.onload=function(){
//from www.java2s.com
var today = new Date().toISOString().split('T')[0];
document.getElementsByName("setTodaysDate")[0].setAttribute('min', today);
}
</script>
</head>
<body>
<input name="setTodaysDate" type="date">
</body>
</html><html>
<head>
<title>How to disable previous dates in date picker using JQuery - devnote.in</title>
<script type="text/javascript" src="https://code.jquery.com/jquery-1.7.2.min.js"></script>
</head>
<body>
<h1>How to disable previous dates in date picker using JQuery</h1>
Date : <input id="date_picker" type="date">
<script language="javascript">
var today = new Date();
var dd = String(today.getDate()).padStart(2, '0');
var mm = String(today.getMonth() + 1).padStart(2, '0');
var yyyy = today.getFullYear();
today = yyyy + '-' + mm + '-' + dd;
$('#date_picker').attr('min',today);
</script>
</body>
</html>