JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://jquery-joshbush.googlecode.com/files/jquery.maskedinput-1.2.2.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/themes/base/jquery-ui.css">
<input class="datepicker" type="text" />

JavaScript

$( ".datepicker" ).datepicker({ dateFormat: 'yy-mm-dd' });
$(".datepicker").mask("9999-99-99");