<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery UI Datepicker - Format date</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$( function() {
$( "#datepicker" ).datepicker();
$( "#format" ).on( "change", function() {
$( "#datepicker" ).datepicker( "option", "dateFormat", $( this ).val() );
});
} );
</script>
</head>
<body>
<p>Date: <input type="text" id="datepicker" size="30"></p>
<p>Format options:<br>
<select id="format">
<option value="mm/dd/yy">Default - mm/dd/yy</option>
<option value="yy-mm-dd">ISO 8601 - yy-mm-dd</option>
<option value="d M, y">Short - d M, y</option>
<option value="d MM, y">Medium - d MM, y</option>
<option value="DD, d MM, yy">Full - DD, d MM, yy</option>
<option value="'day' d 'of' MM 'in the year' yy">
With text - 'day' d 'of' MM 'in the year' yy
</option>
</select>
</p>
</body>
</html>
https://jqueryui.com/resources/demos/datepicker/date-formats.html