JSFiddle - React, Tailwind, and code Playground
by Lokesh Yadav
HTML
<div class="myClass"></div>
<div class="myClass"></div>
<div class="myClass"></div>
<div class="myClass"></div>
JavaScript
$('.myClass').each(function(index, element){
$(element).addClass("myClass_" + index).text("Node " + index);
});