JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://code.jquery.com/ui/jquery-ui-git.css">
<script src="http://code.jquery.com/ui/jquery-ui-git.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/i18n/jquery-ui-i18n.min.js"></script>
<input id="datepicker">

JavaScript

$( "#datepicker" ).datepicker(
    $.datepicker.regional[ "pt-BR" ]
);