Run results for: DataAttribute vs Class Selector vs ID Selector vs Tag vs :is() - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Class	7946654.0 Ops/sec
ID	5082389.0 Ops/sec
data attribute	6053579.5 Ops/sec
:is(div, span)	2691458.0 Ops/sec
Tag	14720927.0 Ops/sec

HTML Preparation code:

<div class="hello" id="hello" data-hello>Hello</div>

Tests:

Class
document.querySelector('.hello');
ID
document.querySelector('#hello');
data attribute
document.querySelector('[data-hello]');
:is(div, span)
document.querySelector(':is(div,span)');
Tag
document.querySelector('div');