JSFiddle - React, Tailwind, and code Playground

by mynameiswilson

HTML

<ul id="test">
<li>test</li>
<li>test</li>
<li>test</li> <!--add a class to this li-->
<li>test</li>
<li>test</li>
<li>test</li>  <!--add a class to this li-->
<li>test</li>
<li>test</li>
<li>test</li> <!--add a class to this li-->
</ul>

CSS

.foo { color: #f00 }

JavaScript

$('#test li:nth-child(3n+3)').addClass('foo');