Run results for: querySelector vs getElementById & getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

query selector

15.3M/s

id & class

13.2M/s

View exact numbers

Test name	Executions per second
✓ query selector	15,336,926 Ops/sec
id & class	13,229,256 Ops/sec

HTML Preparation code:

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

Tests: