JSFiddle - React, Tailwind, and code Playground

HTML

<div id="div1">1</div>
<div id="div2">2</div>
<div id="div3">3</div>
<div id="div4">4</div>
<div id="div5">5</div>

CSS

div { display: inline-block; width:25px; height: 25px; background-color:lightblue; }

JavaScript

var nodes = document.getElementsByTagName('div');
for (var i = 0; i < nodes.length; i++) {
   nodes[i].addEventListener('click', function() {
      alert('You clicked element #' + (i+1));
   });
}