Run results for: setAttribute vs style

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 OPR/57.0.3098.110

Browser: Opera 57

Operating system: Mac OS X 10.14.2

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
setAttribute	20.9 Ops/sec
style	33.5 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"; }