JSFiddle - React, Tailwind, and code Playground

HTML

<div id="Wrap">
	<div class="nt_row" title="AAA"></div>
	<div class="nt_row" title="CCC"></div>
	<div class="nt_row" title="BBB"></div>
</div>

JavaScript

function gatherTreeIds( $parent ){
	var GatheredIds = [];
	$parent.children('div.nt_row').each(function(){
		GatheredIds[ this.title ] = 'someValue';
	});
	return GatheredIds;
}

console.log(gatherTreeIds( $('#Wrap') ) );