Run results for: Set Prop Varaible vs setAttribute

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser: Chrome 138

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

style.cssText

882/s

style.setProperty

226/s

View exact numbers

Test name	Executions per second
✓ style.cssText	882 Ops/sec
style.setProperty	226 Ops/sec

HTML Preparation code:

<div id="test"></div>

Script Preparation code:

element = document.getElementById("test");

Tests:

style.setProperty
let i = 0; while (i < 10000) { element.style.setProperty("--myVar", "blue"); i++; }
style.cssText
let i = 0; while (i < 10000) { element.setAttribute("style", "--myVar: blue"); i++; }