Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Linux; Android 11; SAMSUNG SM-N975F) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/14.2 Chrome/87.0.4280.141 Mobile Safari/537.36

Browser: Chrome Mobile 87

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
querySelector	1392402.0 Ops/sec
getElementsByClassName	1689824.0 Ops/sec

HTML Preparation code:

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

Tests:

querySelector
document.querySelector(".test")
getElementsByClassName
document.getElementsByClassName(".test")