JSFiddle - React, Tailwind, and code Playground

HTML

<div class="tile">
  <div>
    <div someAttr='boo'>
  </div>
</div>
<div class="tile">
  <div>
    <div someAttr='foo'>
  </div>
</div>
<div class="tile">
  <div>
    <div someAttr='boo'>
  </div>
</div>
<div class="tile">
  <div>
    <div someAttr='boo'>
  </div>
</div>
  <div id="result"></div>

JavaScript

$(document).ready(function(){
  $('#result').html($( '.tile:has(div:has(div[someAttr=foo]))' ).length);
});