Run results for: DataAttribute vs Class Selector vs ID Selector

Run details:

User agent: Mozilla/5.0 (Linux; Android 12; SM-A415F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Mobile Safari/537.36 EdgA/103.0.1264.62

Browser: Chrome Mobile 103

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Class	1068189.1 Ops/sec
ID	692467.3 Ops/sec
data attribute	601434.3 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]');

Run results for: DataAttribute vs Class Selector vs ID Selector

Class

ID

data attribute