Run results for: querySelectorAll vs JQuery

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

Go to the benchmark

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:125.0) Gecko/20100101 Firefox/125.0

Browser: Firefox 125

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

jQuery selector by Class

10K/s

querySelectorAll by Class

8K/s

querySelectorAll by Element

8K/s

querySelectorAll by Attribute

7K/s

jQuery selector by Element

7K/s

jQuery selector by Attribute

3K/s

View exact numbers

Test name	Executions per second
✓ jQuery selector by Class	9,983 Ops/sec
querySelectorAll by Class	7,647 Ops/sec
querySelectorAll by Element	7,604 Ops/sec
querySelectorAll by Attribute	7,136 Ops/sec
jQuery selector by Element	7,094 Ops/sec
jQuery selector by Attribute	2,764 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.querySelectorAll('[data-component]');
jQuery selector by Attribute
let components = $('[data-component]');
querySelectorAll by Class
let components = document.querySelectorAll('.component');
jQuery selector by Class
let components = $('.component');
querySelectorAll by Element
let components = document.querySelectorAll('div');
jQuery selector by Element
let components = $('div');