JSFiddle - React, Tailwind, and code Playground
by omarqa
HTML
<div class="list-group" id="setActive"> <a href="#">aaa</a>
<a href="#">bbb</a>
<a href="#">ccc</a>
</div>
JavaScript
var setActive = document.getElementById('setActive'),
anchors = setActive.querySelectorAll('a');
for (var i = 0; i < anchors.length; i++)
anchors[i].className = "list-item";