Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36 OPR/76.0.4017.177

Browser: Opera 76

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
querySelector	3303779.0 Ops/sec
getElementsByClassName	4135481.0 Ops/sec

HTML Preparation code:

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

Tests: