Run results for: className vs. setAttribute vs. classList -- checking for class

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36

Browser: Chrome 77

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 4 years ago

HTML Preparation code:

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

Tests:

className
var element = document.getElementById("foo"); var i = 10000; while (i--) { const isFooClass = element.className.includes("foo"); }
getAttribute
var element = document.getElementById("foo"); var i = 10000; while (i--) { var isFooClass = element.getAttribute("class") === "foo"; }
classList
var element = document.getElementById("foo"); var i = 10000; while (i--) { var isFooClass = element.classList.contains("foo"); }