Run results for: clientHeight vs offsetHeight vs getComputedStyle

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4676.0 Safari/537.36 OPR/83.0.4232.0 (Edition developer)

Browser: Opera 83

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
clientHeight	465387.1 Ops/sec
offsetHeight	256971.9 Ops/sec
window.getComputedStyle	204074.4 Ops/sec
Multiple: Only _style	126400.4 Ops/sec
Multiple: _style e clientHeight	151670.5 Ops/sec

HTML Preparation code:

<div id="teste">teste</div>

Tests:

clientHeight
document.getElementById('teste').clientHeight;
offsetHeight
document.getElementById('teste').offsetHeight;
window.getComputedStyle
parseFloat(window.getComputedStyle(document.getElementById('teste'))['height'])
Multiple: Only _style
let style1 = window.getComputedStyle(document.getElementById('teste')) parseFloat(style1['margin-top']) parseFloat(style1['margin-bottom']) parseFloat(style1['height'])
Multiple: _style e clientHeight
let style2 = window.getComputedStyle(document.getElementById('teste')) parseFloat(style2['margin-top']) parseFloat(style2['margin-bottom']) document.getElementById('teste').clientHeight;

Run results for: clientHeight vs offsetHeight vs getComputedStyle

clientHeight

offsetHeight

window.getComputedStyle

Multiple: Only _style

Multiple: _style e clientHeight