JSFiddle - React, Tailwind, and code Playground

HTML

<div>
     <h1>
        <a href="#">
            <span>Hello</span>
        </a>
    </h1>

</div>

JavaScript

window.addEventListener("load", function () {
    var els = document.querySelectorAll("*");

    for (var i = 0; i < els.length; i++) {
        els[i].addEventListener("click", function () {
            alert('Click event fired on the ' + this.nodeName + ' element');
        });
    }
});