Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/119.0

Browser: Firefox 119

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

getElementsByClassName

9.6M/s

querySelector

5.0M/s

View exact numbers

Test name	Executions per second
✓ getElementsByClassName	9,621,154 Ops/sec
querySelector	4,993,682 Ops/sec

HTML Preparation code:

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

Tests: