Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

getElementsByClassName

31.3M/s

querySelector

20.7M/s

View exact numbers

Test name	Executions per second
✓ getElementsByClassName	31,325,008 Ops/sec
querySelector	20,676,090 Ops/sec

HTML Preparation code:

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

Tests: