JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.8.18/themes/smoothness/jquery-ui.css" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.18/jquery-ui.min.js"></script>
<div class="demo">
    <input type="text" id="datepicker">
</div>

JavaScript

$('#datepicker').datepicker();