CSSNamespaceRule
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The CSSNamespaceRule
interface describes an object representing a single CSS @namespace
at-rule.
Instance properties
Inherits properties from its ancestor CSSRule
.
CSSNamespaceRule.namespaceURI
-
Returns a string containing the text of the URI of the given namespace.
CSSNamespaceRule.prefix
-
Returns a string with the name of the prefix associated to this namespace. If there is no such prefix, returns an empty string.
Instance methods
Inherits methods from its ancestor CSSRule
.
Examples
The stylesheet includes a namespace as the only rule. Therefore the first CSSRule
returned will be a CSSNamespaceRule
.
css
@namespace url(http://www.w3.org/1999/xhtml);
js
let myRules = document.styleSheets[0].cssRules;
console.log(myRules[0]); //a CSSNamespaceRule
Specifications
Specification |
---|
CSS Object Model (CSSOM) # the-cssnamespacerule-interface |
Browser compatibility
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