JSFiddle - React, Tailwind, and code Playground

HTML

<div class="myClass"> my div </div>
<p class=""> my p </p>
<span> my span</span>
<br/>

JavaScript

$('*').each(function() {
    if ($(this).hasClass('') === false) {
    	$("body").append($(this).prop("tagName") + " has a proper class defined <br/>");
    }
});