Run results for: jQuery by id vs Document.getElementById

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.100 YaBrowser/16.11.1.636 Yowser/2.5 Safari/537.36

Browser: Yandex Browser 16

Operating system: Mac OS X 10.11.5

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
jQuery	1097256.0 Ops/sec
Vanilla JS	2670488.2 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