Run results for: getElementById vs QuerySelector nested element2

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

Test name	Executions per second
getElementById + firstElementChild	8148761.0 Ops/sec
querySelector	5641804.0 Ops/sec

HTML Preparation code:


<div id="testElmt"><div>
  <p>paragraph</p></div>
</div>

Tests:

getElementById + firstElementChild
const par = document.getElementById("testElmt").querySelector("p");
querySelector
const par = document.querySelector("#testElmt p");