Run results for: setAttribute vs style

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; rv:81.0) Gecko/20100101 Firefox/81.0

Browser: Firefox 81

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
setAttribute	1.9 Ops/sec
style	3.6 Ops/sec

HTML Preparation code:

<div id="foo"></div>

Tests:

setAttribute
var element = document.getElementById("foo"); var i = 10000; while (i--) { element.setAttribute("style", "width: "+i+"px; height: "+i+"px;"); }
style
var element = document.getElementById("foo"); var i = 10000; while (i--) { element.style.width = i+"px"; element.style.height = i+"px"; }