Benchmark: setAttribute/removeAttribute vs. classList.add/remove

HTML Preparation code:

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

Tests:

setAttribute
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.setAttribute("test", "1"); element.removeAttribute("test"); }
classList
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.classList.add("bar"); element.classList.remove("bar"); }

Rendered benchmark preparation results:

Previous results

Test case name	Result
setAttribute
classList

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Safari/537.36

Browser/OS: Chrome 96 on Windows

Test name	Executions per second
setAttribute	555.8 Ops/sec
classList	554.8 Ops/sec

setAttribute/removeAttribute vs. classList.add/remove (version: 0)