JSFiddle - React, Tailwind, and code Playground

HTML

<div id="foo" class="cl">Foo</div>
<div id="bar" class="cl">Bar</div>

JavaScript

function handler(elem){
	alert(elem.toElement.innerHTML);
};
var els = document.getElementsByClassName("cl");
Array.prototype.forEach.call(els, function(el){
	el.addEventListener('click', handler.bind(), false);
 });