The CSSNamespaceRule.namespaceURI read-only property returns a DOMString containing the text of the URI of the given namespace.


var namespaceURI = CSSNamespaceRule.namespaceURI


A DOMString containing a URI.


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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support47 Yes59 No36 ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support4747 Yes5936 ? ?

Document Tags and Contributors

 Contributors to this page: fscholz, chrisdavidmills, erikadoyle, rolfedh, jpmedley
 Last updated by: fscholz,