JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-latest.min.js"></script>
<button type="button">Click to toggle</button>

<div class="testClass">
	A div with class="testClass".
</div>
<div class="testClass">
	The second div with the same class name.
</div>
<p class="testClass">
	A paragraph with testClass
</p>

JavaScript

$("button").click(function(){
    $('.testClass').toggle();
});