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Run results for:
cached window.getComputedStyle vs. getBoundingClientRect vs clientHeight
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<iframe src="https://measurethat.net/Embed?id=629355" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:151.0) Gecko/20100101 Firefox/151.0
Browser:
Firefox 151
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
2 months ago
getComputedStyle
1K/s
clientheight
716/s
getBoundingClientRect
398/s
View exact numbers
Test name
Executions per second
✓
getComputedStyle
1,044 Ops/sec
clientheight
716 Ops/sec
getBoundingClientRect
398 Ops/sec
HTML Preparation code:
<div id="foo"></div>
Tests:
getComputedStyle
var i = 5000; var computedStyle; while (i--) { checkDisplay('foo'); } function checkDisplay(id) { computedStyle = computedStyle || window.getComputedStyle(document.getElementById(id), null); return computedStyle.getPropertyValue("display") === "none"; }
getBoundingClientRect
var i = 5000; while (i--) { checkDisplay('foo'); } function checkDisplay(id) { return document.getElementById(id).getBoundingClientRect().width === 0; }
clientheight
var i = 5000; while (i--) { checkDisplay('foo'); } function checkDisplay(id) { return document.getElementById(id).clientHeight === 0; }