Run results for: computedStyleMap vs getComputedStyle (once)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

computedStyleMap

1.4M/s

getComputedStyle

1.3M/s

View exact numbers

Test name	Executions per second
✓ computedStyleMap	1,441,801 Ops/sec
getComputedStyle	1,291,693 Ops/sec

HTML Preparation code:

<div class="foo"></div>

Tests:

getComputedStyle
var i = 1; var el = document.querySelector(".foo"); while (i--) { window.getComputedStyle(el).getPropertyValue('color') }
computedStyleMap
var i = 1; var el = document.querySelector(".foo"); while (i--) { el.computedStyleMap().get('color') }