JSFiddle - React, Tailwind, and code Playground
HTML
<div class="mainWrapper">
<div class="FirstLayer"><input class="foo" value="fooX" /></div>
<div class="SecondLayer">
<div class="thirdLayer">
<input class="fee" />
</div>
</div>
</div>JavaScript
console.log( $('input.fee').closest(':has("input.foo")').find('input.foo').val() );