Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 11_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/1.6.2b18.05.29.10 Mobile/15G77 Safari/605.1.15 _id/000002

Browser: Mobile Safari 11

Operating system: iOS 11.4.1

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
querySelector	2138298.0 Ops/sec
getElementsByClassName	2410726.0 Ops/sec

HTML Preparation code:

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

Tests:

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