Run results for: id vs testid

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko/20100101 Firefox/147.0

Browser: Firefox 147

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
querySelector	5607246.0 Ops/sec
getElementById	1687666944.0 Ops/sec

HTML Preparation code:

<div id="testdiv">
  <div id="unique" class="unique" name="unique" data-testid="unique">test</div>
</div>

Script Preparation code:

var i, imax;
var doc = document;

Tests:

querySelector
var test = doc.querySelector("div[data-testid='unique']").innerHTML;
getElementById
var test = doc.getElementById('unique').innerHTML;