JSFiddle - React, Tailwind, and code Playground
HTML
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<div class="kirti" id="kivi">
How to get class name using ID
</div>
<button class="kkk">Hitme
</button>JavaScript
$('.kkk').click(function(){
var classnm = $('#kivi').attr('class');
alert(classnm)
});