Run results for: querySelectorAll vs. getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:91.0) Gecko/20100101 Firefox/91.0

Browser: Firefox 91

Operating system: Windows 7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
querySelectorAll	1355012.0 Ops/sec
getElementsByClassName	5487805.0 Ops/sec

HTML Preparation code:

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

Tests: