JSFiddle - React, Tailwind, and code Playground

HTML

<div class="group">
<div class="group1-1">Group1-1</div><br />
<div class="group1-2">Group1-2</div><br />
<div class="group1-3">Group1-3</div><br />
<div class="group1-4">Group1-4</div><br />
<div class="group1-5">Group1-5</div><br />
</div>

This one doesn't match dsf though.<br />
<div class="group2-1">Group2-1</div>

JavaScript

$("[class^='group group1-'][class$='-3']").each(function () {
    var groupNumber = $(this).attr('class').split('-')[1];
    alert('Yep, you clicked group1-' + groupNumber); 
});