Run results for: querySelector vs JQuery

Compares the performance of querySelector against JQuery for selecting elements. For class selector, getElementsByClassName is the best. For element selector, getElementsByTagName is the best.

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36 Edg/137.0.0.0

Browser: Chrome 137

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

querySelectorAll by Element

22.0M/s

querySelectorAll by Class

19.0M/s

querySelectorAll by Attribute

8.8M/s

jQuery selector by Class

2K/s

jQuery selector by Element

2K/s

jQuery selector by Attribute

2K/s

View exact numbers

Test name	Executions per second
✓ querySelectorAll by Element	22,017,786 Ops/sec
querySelectorAll by Class	19,019,660 Ops/sec
querySelectorAll by Attribute	8,776,918 Ops/sec
jQuery selector by Class	2,060 Ops/sec
jQuery selector by Element	2,035 Ops/sec
jQuery selector by Attribute	1,558 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>
<content id="demo">Hello World!</content>

Script Preparation code:

let components = '';
for (let i=0; i<10000; i+=1) {
    components += '<div class="component" data-component="component' + i + '">Content ' + i + '</div>'
}
document.getElementById("demo").innerHTML = components;

Tests:

querySelectorAll by Attribute
let components = document.querySelector('[data-component]');
jQuery selector by Attribute
let components = $('[data-component]');
querySelectorAll by Class
let components = document.querySelector('.component');
jQuery selector by Class
let components = $('.component');
querySelectorAll by Element
let components = document.querySelector('div');
jQuery selector by Element
let components = $('div');