Run results for: getAttribute + setAttribute vs dataset (for loop 1K)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

getAttribute

8K/s

dataset

5K/s

View exact numbers

Test name	Executions per second
✓ getAttribute	8,412 Ops/sec
dataset	4,902 Ops/sec

HTML Preparation code:

<div id="foo" data-foo="foo_id"></div>

Tests:

getAttribute
var element = document.getElementById("foo"); for (let i = 0; i < 1000; ++i) { var originalAttribute = element.getAttribute("data-foo"); element.setAttribute("data-foo", String(i)); var newAttribute = element.getAttribute("data-foo"); }
dataset
var element = document.getElementById("foo"); for (let i = 0; i < 1000; ++i) { var originalAttribute = element.dataset.foo; element.dataset.foo = String(i); var newAttribute = element.dataset.foo; }