Benchmark: id vs testid - MeasureThat.net

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;

Rendered benchmark preparation results:

Previous results

Test case name	Result
querySelector
getElementById

Latest run results:

Run details: (Test run date: 5 months ago)

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

Browser/OS: Firefox 147 on Windows

getElementById

1687.7M/s

querySelector

5.6M/s

View exact numbers

Test name	Executions per second
✓ getElementById	1,687,666,944 Ops/sec
querySelector	5,607,246 Ops/sec

id vs testid (version: 1)