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

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 47 (Yes) ? ? ? ?
Feature Android Android Webview Edge Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 47 (Yes) ? ? ? ? ? 47

Document Tags and Contributors

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