Run results for: QuerySelector vs QuerySelectorAll + forEach for 1 element

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4464.0 Safari/537.36 Edg/91.0.852.0

Browser: Chrome 91

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
QuerySelector	120306.8 Ops/sec
QuerySelectorAll + ForEach	87852.9 Ops/sec

HTML Preparation code:

<div id='hello'></div>
<div id='there'></div>

Tests:

QuerySelector
console.log(document.querySelector('#hello'));
QuerySelectorAll + ForEach
document.querySelectorAll('#hello').forEach((el) => { console.log(el); });