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This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
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
DOMStringcontaining the text of the URI of the given namespace. CSSNamespaceRule.prefix- Returns a
DOMStringwith the name of the prefix associated to this namespace. If there is no such prefix, returnsnull.
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
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|---|
| Basic support | 47 | (Yes) | (Yes) | 9 | ? | ? |
| Feature | Android | Android Webview | Edge | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|---|
| Basic support | No support | 47 | (Yes) | (Yes) | ? | ? | ? | 47 |