Run results for: className vs. setAttribute vs. classList

Run details:

User agent: Mozilla/5.0 (Linux; Android 11; Pixel 4a) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.52 Mobile Safari/537.36

Browser: Chrome Mobile 93

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

HTML Preparation code:

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

Tests:

className
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.className = "bar"; }
setAttribute
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.setAttribute("class", "bar"); }
classList
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.classList.add("bar"); }