JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<script src="https://rawgit.com/guillaumepotier/Parsley.js/master/dist/parsley.js"></script>
 <form class="shop-form kaufen-form--box" id="form-form" action="/sandbox/lieferort/lieferort-gast.html" method="GET">
 dwadawd
 </form>

JavaScript 1.7

$('#form-form').parsley();