This is an experimental technology
Check 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
).
The syntax is described using the WebIDL format.
interface CSSNamespaceRule : CSSRule { readonly attribute DOMString namespaceURI; readonly attribute DOMString? prefix; };
As a CSSRule
, CSSNamespaceRule
also implements the properties of that interface. It has some specific properties:
CSSNamespaceRule.namespaceURI
DOMString
containing the text of the URI of the given namespace.CSSNamespaceRule.prefix
DOMString
with the name of the prefix associated to this namespace. If there is no such prefix, returns null
.As a CSSRule
, CSSNamespaceRule
also implements the methods of that interface. It has no specific methods:
Specification | Status | Comment |
---|---|---|
CSS Object Model (CSSOM) The definition of 'CSSNamespaceRule' in that specification. | Working Draft | Initial definition. |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | 47 | Yes | 59 | No | 36 | ? |
namespaceURI |
47 | 12 | 59 | No | 36 | ? |
prefix |
47 | 12 | 59 | No | 36 | ? |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | 47 | 47 | Yes | 59 | 36 | ? | 5.0 |
namespaceURI |
47 | 47 | Yes | 59 | 36 | ? | 5.0 |
prefix |
47 | 47 | Yes | 59 | 36 | ? | 5.0 |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/CSSNamespaceRule