Run results for: querySelectorAll data attribute vs class name vs combined

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.6.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
data attribute	2293400.2 Ops/sec
class name	3617150.5 Ops/sec
class name with data attribute	2372753.8 Ops/sec

HTML Preparation code:

<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>
<div class="test" data-attribute="test"></div>

Tests:

data attribute
var test = document.querySelectorAll('[data-attribute="test"]');
class name
var test = document.querySelectorAll('.test');
class name with data attribute
var test = document.querySelectorAll('.test[data-attribute="test"]');

Run results for: querySelectorAll data attribute vs class name vs combined

data attribute

class name

class name with data attribute