JSFiddle - React, Tailwind, and code Playground

HTML

<script
			  src="https://code.jquery.com/jquery-3.1.1.min.js"
			  integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8="
			  crossorigin="anonymous"></script>

<div class="when-element-with-this-class">
when this div is ready, js procced function with alert command
</div>

JavaScript

$('.when-element-with-this-class').ready(function() {
    alert( "ready!" );
});