Run results for: jQuery 2.1.4 selector vs document.querySelector

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.104 Safari/537.36

Browser: Chrome 88

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
jQuery 2.1.4	1546944.5 Ops/sec
Vanilla JS	2209757.0 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.js'></script>
<div id="testElement"></div>

AخA
 
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.js'></script>
<div id="testElement"></div>

Tests:

jQuery 2.1.4
var el = $("#testElement")[0]; var className = el.className;
var el = $("#testElement")[0];
var className = el.className;
Vanilla JS
var el = document.querySelector('#testElement'); var className = el.className;
var el = document.querySelector('#testElement');
var className = el.className;