Web/API/CSSNamespaceRule

This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.

The CSSNamespaceRule interface describes an object representing a single CSS @namespace at-rule. It implements the CSSRule interface, with a type value of 10 (CSSRule.NAMESPACE_RULE).

Syntax

The syntax is described using the WebIDL format.

interface CSSNamespaceRule : CSSRule {
    readonly attribute DOMString namespaceURI;
    readonly attribute DOMString? prefix;
};

Properties

As a CSSRule, CSSNamespaceRule also implements the properties of that interface. It has some specific properties:

CSSNamespaceRule.namespaceURI

Returns a DOMString containing the text of the URI of the given namespace.

CSSNamespaceRule.prefix

Returns a DOMString with the name of the prefix associated to this namespace. If there is no such prefix, returns  null.

Methods

As a CSSRule, CSSNamespaceRule also implements the methods of that interface. It has no specific methods:

Specification

Specification	Status	Comment
CSS Object Model (CSSOM)The definition of 'CSSNamespaceRule' in that specification.	Working Draft	Initial definition.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
CSSNamespaceRule	Chrome Full support 47	Edge Full support 12	Firefox Full support 59	IE No support No	Opera Full support 36	Safari Full support Yes	WebView Android Full support 47	Chrome Android Full support 47	Firefox Android Full support 59	Opera Android Full support 36	Safari iOS Full support Yes	Samsung Internet Android Full support 5.0
namespaceURI	Chrome Full support 47	Edge Full support 12	Firefox Full support 59	IE No support No	Opera Full support 36	Safari Full support Yes	WebView Android Full support 47	Chrome Android Full support 47	Firefox Android Full support 59	Opera Android Full support 36	Safari iOS Full support Yes	Samsung Internet Android Full support 5.0
prefix	Chrome Full support 47	Edge Full support 12	Firefox Full support 59	IE No support No	Opera Full support 36	Safari Full support Yes	WebView Android Full support 47	Chrome Android Full support 47	Firefox Android Full support 59	Opera Android Full support 36	Safari iOS Full support Yes	Samsung Internet Android Full support 5.0

Legend

Full support  

Full support

No support  

No support

CSSNamespaceRule by Mozilla Contributors is licensed under CC-BY-SA 2.5.