Run results for: querySelector vs getElementById & getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:141.0) Gecko/20100101 Firefox/141.0

Browser: Firefox 141

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

id & class

13.3M/s

query selector

5.6M/s

View exact numbers

Test name	Executions per second
✓ id & class	13,302,060 Ops/sec
query selector	5,618,071 Ops/sec

HTML Preparation code:

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

Tests: