Run results for: querySelectorAll vs. getElementsByClassName with forEach

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36

Browser: Chrome 87

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
querySelectorAll	515487.7 Ops/sec
getElementsByClassName	1220783.5 Ops/sec

HTML Preparation code:

<div class="test"></div>

AخA
 
<div class="test"></div>

Tests:

querySelectorAll
document.querySelectorAll(".test").forEach(x=>x.style.color='red')
document.querySelectorAll(".test").forEach(x=>x.style.color='red')
getElementsByClassName
Array.from(document.getElementsByClassName(".test")).forEach(x=>x.style.color='red')
Array.from(document.getElementsByClassName(".test")).forEach(x=>x.style.color='red')