Benchmark: getAttribute vs className

HTML Preparation code:

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

Tests:

className
var element = document.getElementById("foo"); var class_name; var i = 1000; while (i--) { class_name = element.className; }
getAttribute
var element = document.getElementById("foo"); var class_name; var i = 1000; while (i--) { class_name = element.getAttribute('class'); }

Rendered benchmark preparation results:

Previous results

Test case name	Result
className
getAttribute

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Latest run results:

Run details: (Test run date: 7 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36

Browser/OS: Chrome 107 on Mac OS X 10.15.7

Test name	Executions per second
className	76296.2 Ops/sec
getAttribute	34020.1 Ops/sec

getAttribute vs className (version: 0)