Run results for: Javascript classList.contains vs element.matches

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.36

Browser: Chrome 102

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
matches	16890.5 Ops/sec
classList	6964.0 Ops/sec

HTML Preparation code:

<div class="foo bar"></div>

Tests:

matches
const element = document.querySelector('.foo'); var i = 1000; while (i--) { element.matches(".foo.bar"); }
classList
const element = document.querySelector('.foo'); var i = 1000; while (i--) { element.classList.contains('foo') && element.classList.contains('bar'); }