Run results for: querySelector vs getElementsByClassName[0]

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36 OPR/70.0.3728.119

Browser: Opera 70

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
querySelector	3380594.0 Ops/sec
getElementsByClassName	2769592.0 Ops/sec

HTML Preparation code:

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

Tests: