Run results for: jQuery 3.3.1 by id vs Document.getElementById

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

Browser: Chrome 66

Operating system: Mac OS X 10.12.0

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
jQuery	1440324.0 Ops/sec
Vanilla JS	3549882.0 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.3.1.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;