Run results for: querySelectorAll vs. getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0

Browser: Firefox 69

Operating system: Windows 7

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
querySelectorAll	564846.7 Ops/sec
getElementsByClassName	2558640.0 Ops/sec

HTML Preparation code:

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

Tests: