Run results for: querySelector() vs getElementsByClassName()[0]

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0

Browser: Firefox 149

Operating system: Linux

Device Platform: Desktop

Date tested: 3 months ago

getElementsByClassName

2.4M/s

querySelector

719K/s

View exact numbers

Test name	Executions per second
✓ getElementsByClassName	2,436,389 Ops/sec
querySelector	718,870 Ops/sec

HTML Preparation code:

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

Tests: