<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="node_modules/jquery-ui/themes/base/all.css">
<script src="node_modules/jquery-ui/external/jquery/jquery.js"></script>
<script src="node_modules/jquery-ui/ui/widgets/datepicker.js"></script>
</head>
<body>
<input type="text" id="datepicker">
<script>
$('#datepicker').datepicker();
</script>
</body>
</html>