Run results for: matches vs. classList

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:146.0) Gecko/20100101 Firefox/146.0

Browser: Firefox 146

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 7 months ago

classList

1.6M/s

matches

23K/s

View exact numbers

Test name	Executions per second
✓ classList	1,557,563 Ops/sec
matches	22,741 Ops/sec

HTML Preparation code:

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

Tests:

matches
let element = document.querySelector(".foo"); let i = 1000; while (i--) { element.matches(".foo"); }
classList
let element = document.querySelector(".foo"); let i = 1000; while (i--) { element.classList.contains("foo"); }