Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Linux; Android 6.0.1; SAMSUNG SM-G930V Build/MMB29M) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/7.4 Chrome/59.0.3071.125 Mobile Safari/537.36

Browser: Chrome Mobile 59

Operating system: Android 6.0.1

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
querySelector	256740.4 Ops/sec
getElementsByClassName	442860.2 Ops/sec

HTML Preparation code:

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

Tests:

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