Run results for: querySelectorAll vs. getElementsByClassName with forEach

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0

Browser: Firefox 69

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
querySelectorAll	376187.9 Ops/sec
getElementsByClassName	1612510.0 Ops/sec

HTML Preparation code:

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

Tests:

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