JSFiddle - React, Tailwind, and code Playground

by Justin Breen

HTML

<div class="parent" id="one">
	<div class="child" id="two">
		<div class="grandchild" id="three">
			<div class="great-grandchild" id="four"></div>
		</div>
	</div>
</div>

JavaScript

var parent_dom = $( '.parent' )[0];
var child_dom = $( '.great-grandchild' )[0];

jQuery( function( $ ) {
    if ( $.contains( parent_dom, child_dom ) ) {
        alert( 'element logged' );
    }
} );