JSFiddle - React, Tailwind, and code Playground
by Shef
HTML
<div class="wrapper">
<div class="parent">parent<div>child</div></div>
<div class="parent">parent<div>child</div></div>
<div class="parent">parent<div>child</div></div>
</div>
JavaScript
var div = $('.wrapper div').filter('.parent');
alert(div.attr('class'));