Run results for: querySelector(), id vs class

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36

Browser: Chrome 140

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 10 months ago

class

11.7M/s

5.2M/s

View exact numbers

Test name	Executions per second
✓ class	11,739,010 Ops/sec
id	5,180,680 Ops/sec

HTML Preparation code:

<section>
  <div>
    <p id="idName" class="className"></p>
  </div>
</section>

Tests: