Свойство namespaceUri

String? namespaceUri

Реализация

@JSName('namespaceURI')
String? get namespaceUri native;

© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.19.6/dart-html/CssNamespaceRule/namespaceUri.html