Run results for: querySelectorAll.forEach() vs [...getElementsByClassName].forEach()

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0.1 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 5 months ago

Test name	Executions per second
querySelectorAll.forEach()	1632043.2 Ops/sec
[...getElementsByClassName].forEach()	1595541.0 Ops/sec

HTML Preparation code:

<div class="test">
    <div class="saufdzgzg">
        <div class="test"></div>
    </div>
    <div class="dsfdf">
        <div class="test">
            <div class="sd"></div>
        </div>
    </div>
</div>

Tests:

querySelectorAll.forEach()
document.querySelectorAll(".test").forEach((element) => element.classList.add("nottest"));
[...getElementsByClassName].forEach()
[...document.getElementsByClassName("test")].forEach((element) => element.classList.add("nottest"));