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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

querySelector

20.3M/s

getElementsByClassName

16.6M/s

View exact numbers

Test name	Executions per second
✓ querySelector	20,300,298 Ops/sec
getElementsByClassName	16,611,566 Ops/sec

HTML Preparation code:

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

Tests: