Run results for: classList toggle vs. classList add hide

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36 Edg/135.0.0.0

Browser: Chrome 135

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

classList add hide

1K/s

classList toggle

985/s

View exact numbers

Test name	Executions per second
✓ classList add hide	1,055 Ops/sec
classList toggle	985 Ops/sec

HTML Preparation code:

<style type="text/css">
        .hide {
            display: none;
        }
</style>
<div id="foo"></div>

Tests:

classList toggle
var element = document.getElementById("foo"); var i = 3000; while (i--) { element.classList.toggle("hide" , true); element.classList.toggle("hide" , false); }
classList add hide
var element = document.getElementById("foo"); var i = 3000; while (i--) { element.classList.add("hide"); element.classList.remove("hide"); }