Run results for: Contains className vs classList

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36 OPR/92.0.0.0

Browser: Opera 92

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
className	1133950.6 Ops/sec
classList	908613.6 Ops/sec

HTML Preparation code:

<div id="testDiv" class="test1 test2">Sample div</div>

Tests:

className
var div = document.getElementById('testDiv'); div.className.includes("test1"); div.className.includes("test2");
classList
var div = document.getElementById('testDiv'); div.classList.contains("test1"); div.classList.contains("test2");