Run results for: getAttribute vs dataset

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36

Browser: Chrome 94

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
getAttribute	2830.8 Ops/sec
dataset	637.5 Ops/sec

HTML Preparation code:

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

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

Tests:

var element = document.getElementById("foo");
var i = 10000;
while (i--) {
	var foo = element.getAttribute("data-foo");
}

 
var element = document.getElementById("foo");var i = 10000;while (i--) {    var foo = element.getAttribute("data-foo");}

var element = document.getElementById("foo");
var i = 10000;
while (i--) {
  	var foo = element.dataset.foo;
}

 
var element = document.getElementById("foo");var i = 10000;while (i--) {    var foo = element.dataset.foo;}