Run results for: dataset vs setAttribute

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0

Browser: Firefox 132

Operating system: Windows

Device Platform: Desktop

Date tested: one month ago

Test name	Executions per second
dataset	9432.0 Ops/sec
setAttribute	15203.1 Ops/sec

HTML Preparation code:


<div id='set' data-open="0"></div>

Tests:

dataset
const elem = document.getElementById("set"); var i = 1000; while (i--) { elem.dataset.open = "1"; }
setAttribute
const elem = document.getElementById("set"); var i = 1000; while (i--) { elem.setAttribute('data-open', '1') }