Run results for: ResizeObserver vs matchMedia 3x

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:115.0) Gecko/20100101 Goanna/6.7 Firefox/115.0 PaleMoon/33.7.1

Browser: Pale Moon (Firefox Variant) 33

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
ResizeObserver	99.7 Ops/sec
matchMedia	105.1 Ops/sec

HTML Preparation code:

<div>
  Hello
</div>

Tests:

ResizeObserver
let value; const observer = new ResizeObserver(entries => { value = entries[0].contentRect.width; }) observer.observe(document.body) for (let i = 300; i <= 2000; i++) { window.resizeTo(i, 1000) } for (let i = 300; i <= 2000; i++) { window.resizeTo(i, 1000) } for (let i = 300; i <= 2000; i++) { window.resizeTo(i, 1000) }
matchMedia
let value; const handleMatchChange = (val) => { value = val; } const match1 = window.matchMedia('screen and (min-width: 800px)') match1.addEventListener('change', handleMatchChange); const match2 = window.matchMedia('screen and (min-width: 480px)') match2.addEventListener('change', handleMatchChange); const match3 = window.matchMedia('screen and (min-width: 1200px)') match3.addEventListener('change', handleMatchChange); for (let i = 500; i <= 1920; i++) { window.resizeTo(i, 1000) } for (let i = 300; i <= 2000; i++) { window.resizeTo(i, 1000) } for (let i = 300; i <= 2000; i++) { window.resizeTo(i, 1000) }