Run results for: clientHeight vs getComputedStyle().height

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 26

Operating system: iOS 18.7

Device Platform: Mobile

Date tested: 7 months ago

clientHeight

19.7M/s

getComputedStyle

4.2M/s

View exact numbers

Test name	Executions per second
✓ clientHeight	19,719,920 Ops/sec
getComputedStyle	4,150,444 Ops/sec

HTML Preparation code:

<div id="test">test</div>

Script Preparation code:

var element = document.getElementById('test');

Tests: