Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

getElementsByClassName

3.1M/s

querySelector

2.7M/s

View exact numbers

Test name	Executions per second
✓ getElementsByClassName	3,111,889 Ops/sec
querySelector	2,694,153 Ops/sec

HTML Preparation code:

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

Tests: