CSSImportRule: layerName property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2022.

The read-only layerName property of the CSSImportRule interface returns the name of the cascade layer created by the @import at-rule.

If the created layer is anonymous, the string is empty (""), if no layer has been created, it is the null object.

Value

A string, that can be empty, or the null object.

Examples

The document's single stylesheet contains three @import rules. The first declaration imports a stylesheet into a named layer. The second declaration imports a stylesheet into an anonymous layer. The third declaration imports a stylesheet without a layer declaration.

The layerName property returns the name of the layer associated with the imported stylesheet.

css
@import url("style1.css") layer(layer-1);
@import url("style2.css") layer;
@import url("style3.css");
js
const myRules = document.styleSheets[0].cssRules;
console.log(myRules[0].layerName); // returns `"layer-1"`
console.log(myRules[1].layerName); // returns `""` (an anonymous layer)
console.log(myRules[2].layerName); // returns `null`

Specifications

Specification
CSS Object Model (CSSOM)
# dom-cssimportrule-layername

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
layerName

Legend

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Full support
Full support

See also