Run results for: window.getComputedStyle vs. memoized version

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
getComputedStyle	1094.7 Ops/sec
memoized getComputedStyle	3209.1 Ops/sec

HTML Preparation code:

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

Tests:

getComputedStyle
var ele = document.getElementById('foo'); var i = 3000; while (i--) { chekele(); } function chekele() { return window.getComputedStyle(ele, null).getPropertyValue("display").indexOf('none') === -1; }
memoized getComputedStyle
var ele = document.getElementById('foo'); var computedStyle = window.getComputedStyle(ele, null); var i = 3000; while (i--) { chekele(); } function chekele() { return computedStyle.getPropertyValue("display").indexOf('none') === -1; }