Run results for: jQuery by id vs Document.getElementById

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.99 YaBrowser/19.1.1.909 Yowser/2.5 Safari/537.36

Browser: Yandex Browser 19

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
jQuery	0.0 Ops/sec
Vanilla JS	3717354.0 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.1.0.min.js"></script>
<div id="testElement"></div>

Tests:

jQuery
var el = $("#testElement")[0]; var className = el.className;
Vanilla JS
var el = document.getElementById('testElement'); var className = el.className;

Run results for: jQuery by id vs Document.getElementById

Comparing speed of getting element by id with jQuery vs Vanilla JS

jQuery

Vanilla JS