Run results for: querySelector 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

10.4M/s

querySelector

5.4M/s

View exact numbers

Test name	Executions per second
✓ getElementsByClassName	10,391,560 Ops/sec
querySelector	5,415,764 Ops/sec

HTML Preparation code:

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

Tests: