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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1 Mobile/15E148 Safari/605.1 NAVER(inapp; search; 2000; 12.0.4; XR)

Browser: Mobile Safari 17

Operating system: iOS 17.1.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
style.display = none	275.3 Ops/sec
classList add hide	383.5 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"); }