JSFiddle - React, Tailwind, and code Playground

HTML

<div id="1">
    <div id="2">
        <div id="3" class="find-me"></div>
    </div>
</div>
<div id="4">
    <div id="5" class="find-me"></div>
</div>

JavaScript

$('.find-me').each(function(index, el){
    
    alert($(el).parents("div").last().attr("id"));
});