Benchmark: Javascript classList.contains vs element.matches vs classList.some2

HTML Preparation code:

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

Tests:

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

Rendered benchmark preparation results:

Previous results

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser/OS: Chrome 136 on Windows

classList

25.1M/s

classList some

23.6M/s

matches

23.2M/s

View exact numbers

Javascript classList.contains vs element.matches vs classList.some2 (version: 1)