Run results for: querySelector vs getElementById & getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

query selector

4.1M/s

id & class

3.6M/s

View exact numbers

Test name	Executions per second
✓ query selector	4,106,413 Ops/sec
id & class	3,594,270 Ops/sec

HTML Preparation code:

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

Tests: