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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

classNameq

648K/s

classListw

561K/s

matchese

522K/s

classList someq

444K/s

View exact numbers

HTML Preparation code:

<body class="foo bar baz"></body>

Tests:

matchese
var i = 1000; while (i--) { if (document.body.matches(".foo")) { return true; } }
classListw
var i = 1000; while (i--) { if (document.body.classList.contains('foo')) { return true; } }
classList someq
var i = 1000; while (i--) { if (['foo'].some(className => document.body.classList.contains(className))) { return true; } }
classNameq
var i = 1000; while (i--) { if (!!~document.body.className.indexOf('foo')) { return true; } }