JSFiddle - React, Tailwind, and code Playground

by 20yco

HTML

<script src="//code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<link rel="stylesheet" href="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">


<h4 class="panel-title">
  <a class="accordion-toggle collapsed" data-toggle="collapse" 
     href="#collapse2" id="accordion-toggle"> Pumps / Nozzles / Tanks</a>
</h4>

JavaScript

$(document).ready(function () {
 if ($("#accordion-toggle").hasClass("collapsed")) {
    $(".accordion-toggle").parent().addClass("black-heading");
 }
});