Run results for: querySelectorAll vs. getElementsByClassName

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

getElementsByClassName

9.2M/s

querySelectorAll

2.2M/s

View exact numbers

Test name	Executions per second
✓ getElementsByClassName	9,241,237 Ops/sec
querySelectorAll	2,230,294 Ops/sec

HTML Preparation code:

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

Tests: