Run results for: window.getComputedStyle vs. getBoundingClientRect for height

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0

Browser: Firefox 105

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
getComputedStyle	193.8 Ops/sec
getBoundingClientRect	360.3 Ops/sec

HTML Preparation code:

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

AخA
 
<div id="foo"></div>

Tests:

getComputedStyle
var i = 5000; const node = document.getElementById('foo') while (i--) { checkDisplay('foo'); } function checkDisplay(id) { return parseFloat(window.getComputedStyle(node).height) > 0; }
x

var i = 5000;
const node = document.getElementById('foo')
while (i--) {
checkDisplay('foo');
}

function checkDisplay(id) {
return parseFloat(window.getComputedStyle(node).height) > 0;
}

getBoundingClientRect

var i = 5000;
const node = document.getElementById('foo')

while (i--) {
	checkDisplay('foo');
}

function checkDisplay(id) {
    return node.getBoundingClientRect().height > 0;
}

 
var i = 5000;const node = document.getElementById('foo')​while (i--) {    checkDisplay('foo');}​function checkDisplay(id) {    return node.getBoundingClientRect().height > 0;}​