Run results for: clientHeight vs offsetHeight vs getComputedStyle

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36

Browser: Chrome 95

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
clientHeight	489669.8 Ops/sec
offsetHeight	258787.8 Ops/sec
window.getComputedStyle	214214.1 Ops/sec
Multiple: Only _style	125891.5 Ops/sec
Multiple: _style e clientHeight	146803.5 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;