JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <button type="button">Clica-me!</button>
</div>
<p id="info"></p>

JavaScript

var div = document.querySelector('div');
var info = document.querySelector('#info');

div.addEventListener('click', function(e){
	info.innerHTML += ['legacy', this, e.target.tagName, '<br>'].join(' ');
});
div.addEventListener('click', e => {
	info.innerHTML += ['arrow', this, e.target.tagName, '<br>'].join(' ');
});