Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 13_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/14.0b12646 Mobile/15E148 Safari/605.1.15

Browser: Mobile Safari 13

Operating system: iOS 13.3

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
querySelector	3099550.0 Ops/sec
getElementsByClassName	2332043.0 Ops/sec

HTML Preparation code:

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

Tests:

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