Run results for: style.display = none vs. classList add hide

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.1 Safari/605.1.15

Browser: Safari 26

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 4 months ago

Test name	Executions per second
style.display = none	3640.6 Ops/sec
classList add hide	1241.3 Ops/sec

HTML Preparation code:

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

Tests:

style.display = none
var element = document.getElementById("foo"); var i = 3000; while (i--) { element.style.display = 'none'; element.style.display = 'block'; }
classList add hide
var element = document.getElementById("foo"); var i = 3000; while (i--) { element.classList.add("hide"); element.classList.remove("hide"); }