Run results for: querySelectorAll vs. getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0 Waterfox/56.3

Browser: Firefox 56

Operating system: Windows 7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
querySelectorAll	434679.3 Ops/sec
getElementsByClassName	2530779.0 Ops/sec

HTML Preparation code:

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

Tests: