Run results for: CSS variables VS Set property

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Transform

505K/s

CSS property

437K/s

View exact numbers

Test name	Executions per second
✓ Transform	504,783 Ops/sec
CSS property	436,908 Ops/sec

HTML Preparation code:

<div>
 <img class="js-image"/>
</div>

Tests:

Transform
const imageToScale = document.querySelector('.js-image'); imageToScale.style.transform = `scale(${0.5})`;
CSS property
const imageToScale = document.querySelector('.js-image'); imageToScale.style.setProperty('--motion-scale', 0.5);