jQuery addClass example
Change class name on click in jQuery
by therichpost
HTML
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="//code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<input type="text" name="start_date" id="start_date" placeholder="Select Start Date">
JavaScript
$( "#start_date" ).datepicker();//set datepicker
$("#start_date").on('keypress', function(event) {
return false;
});