Benchmark: getElementById vs QuerySelector nested element2

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");

Rendered benchmark preparation results:

Previous results

Test case name	Result
getElementById + firstElementChild
querySelector

Latest run results:

Run details: (Test run date: one year ago)

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/OS: Chrome 130 on Mac OS X 10.15.7

getElementById + firstElementChild

8.1M/s

querySelector

5.6M/s

View exact numbers

Test name	Executions per second
✓ getElementById + firstElementChild	8,148,761 Ops/sec
querySelector	5,641,804 Ops/sec

getElementById vs QuerySelector nested element2 (version: 1)