Run results for: querySelectorAll vs. getElementsByClassName with forEach

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:74.0) Gecko/20100101 Firefox/74.0

Browser: Firefox 74

Operating system: Linux

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
querySelectorAll	185020.0 Ops/sec
getElementsByClassName	977338.7 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')