JSFiddle - React, Tailwind, and code Playground

HTML

<div id="cont">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</div>

CSS

#cont div {
    cursor: pointer;
    background: green;
    color: white;
    margin: 10; 
    padding: 20px;
    display: inline-block;
}

JavaScript

var selector = "#cont div";
var items = $(selector);
for (var i=0; i < items .length; i++) {
    $(selector + ':eq('+ i + ')').on('click', 
        (function(i) {
            return function(){
                alert(i);
            }
        })(i)
    );
}