Run results for: jQuery versus Vanilla JS GetID Speed Test

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/74.0.3729.121 Mobile/15E148 Safari/605.1

Browser: Chrome Mobile iOS 74

Operating system: iOS 12.2

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
Vanilla getElementById(id)	1367216.8 Ops/sec
Vanilla querySelector(#id)	937103.7 Ops/sec
Vanilla querySelectorAll(#id)	708162.9 Ops/sec
jQuery(#id)	665615.8 Ops/sec

HTML Preparation code:

<script src="//code.jquery.com/jquery-3.4.1.slim.min.js"></script>
<div id="fixed-id"></div>

Tests:

Vanilla getElementById(id)
var el = document.getElementById("fixed-id"); var className = el.className;
Vanilla querySelector(#id)
var el = document.querySelector('#fixed-id'); var className = el.className;
Vanilla querySelectorAll(#id)
var el = document.querySelectorAll('#fixed-id'); var className = el.className;
jQuery(#id)
var el = $("#fixed-id"); var className = el.className;

Run results for: jQuery versus Vanilla JS GetID Speed Test

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

Vanilla getElementById(id)

Vanilla querySelector(#id)

Vanilla querySelectorAll(#id)

jQuery(#id)