I looked up how to get DOM Elements with jQuery, so here’s a memo.
The following JavaScript code and jQuery code return the same result.
■ JavaScript
document.getElementById('contents');
■ jQuery
jQuery('#contents').get(0);
That’s all.
【Reference】
・jQueryからDOM Elementを取得 - ゆっくりゆっくり (Getting DOM Element from jQuery - SlowlySlowly)
That’s all from the Gemba.