Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:90.0) Gecko/20100101 Firefox/90.0

Browser: Firefox 90

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
querySelector	2999738.8 Ops/sec
getElementsByClassName	5347731.5 Ops/sec

HTML Preparation code:

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

Tests: