JSFiddle - React, Tailwind, and code Playground
HTML
<div id="animDummy1">
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</div>
JavaScript
$(document).ready(function(){
var children = $('#animDummy1').children();
$(children).each(function(index, item){
console.log(index);
});
});