Run results for: matches vs. closest vs. classList

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.5.1

Device Platform: Mobile

Date tested: 10 months ago

Test name	Executions per second
matches	50803.1 Ops/sec
closest	45686.5 Ops/sec
classList	67417.9 Ops/sec

HTML Preparation code:

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

Tests:

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