Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.0.0; SAMSUNG SM-G935F Build/R16NW) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/7.0 Chrome/59.0.3071.125 Mobile Safari/537.36

Browser: Chrome Mobile 59

Operating system: Android 8.0.0

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
querySelector	487215.9 Ops/sec
getElementsByClassName	670875.8 Ops/sec

HTML Preparation code:

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

Tests:

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