Run results for: jQuery by id vs Document.getElementById

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/604.5.6 (KHTML, like Gecko) Version/11.0.3 Safari/604.5.6

Browser: Safari 11

Operating system: Mac OS X 10.13.3

Device Platform: Other

Date tested: 6 years ago

Test name	Executions per second
jQuery	2308854.0 Ops/sec
Vanilla JS	4062665.0 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;