beforeUnloadEvent constant

EventStreamProvider<BeforeUnloadEvent> beforeUnloadEvent = const _BeforeUnloadEventStreamProvider<BeforeUnloadEvent>('beforeunload')

Static factory designed to expose beforeunload events to event handlers that are not necessarily instances of Window.

See EventStreamProvider for usage information.

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-html/Window/beforeUnloadEvent-constant.html