Benchmark: classList.contains VS className.includes

HTML Preparation code:

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

Tests:

className.includes
let el = document.getElementById("foo"), i = 10000; while (i--) { el.className?.includes("test"); }
classList.contains
let el = document.getElementById("foo"), i = 10000; while (i--) { el.classList?.contains("test"); }

Rendered benchmark preparation results:

Previous results

Test case name	Result
className.includes
classList.contains

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Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser/OS: Chrome 116 on Mac OS X 10.15.7

Test name	Executions per second
className.includes	7033.0 Ops/sec
classList.contains	1399.7 Ops/sec

classList.contains VS className.includes (version: 0)