JSFiddle - React, Tailwind, and code Playground
HTML
<div class="pane alt" id="a">
<h3>Nick says:</h3>
<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi malesuada
</p>
<p>
<a href="#" class="btn-delete">Delete</a> <a href="#" class="btn-unapprove">Unapprove</a>
<a href="#" class="btn-approve" style="display:none">Approve</a>
</p>
</div>
JavaScript
$('.btn-unapprove').click(function(){
alert($(this).parents('.pane.alt').attr('id'));
});