Run results for: className vs. setAttribute data attribute vs. classList

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36

Browser: Chrome 87

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

HTML Preparation code:

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

Tests:

className
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.className = "is-active"; }
setAttribute
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.setAttribute("data-state", "active"); }
classList
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.classList.add("is-active"); }