JSFiddle - React, Tailwind, and code Playground

HTML

<div id="avo">
    <div id="pai">
        <div id="filho"></div>
    </div>
</div>

CSS

div { padding: 20px; min-height: 20px; }
#avo { background: red; }
#pai { background: green; }
#filho { background: blue; }

JavaScript

document.getElementById('avo').onclick = function(e) {
    alert(e.target.id);  
};