1. Dart
2. dart:html
3. ApplicationCache
4. onObsolete property

##### ApplicationCache class

1. Properties
2. onCached
3. onChecking
4. onDownloading
5. onError
6. onNoUpdate
7. onObsolete
8. onProgress
9. onUpdateReady
10. status
11. hashCode
12. on
13. runtimeType
14. Methods
15. abort
16. swapCache
17. update
18. addEventListener
19. dispatchEvent
20. noSuchMethod
21. removeEventListener
22. toString
23. Operators
24. operator ==
25. Static properties
26. supported
27. Constants
28. cachedEvent
29. CHECKING
30. checkingEvent
31. DOWNLOADING
32. downloadingEvent
33. errorEvent
34. IDLE
35. noUpdateEvent
36. OBSOLETE
37. obsoleteEvent
38. progressEvent
39. UNCACHED
40. UPDATEREADY
41. updateReadyEvent

description

# onObsolete property

Stream<Event> onObsolete

Stream of `obsolete` events handled by this ApplicationCache.

## Implementation

    Stream<Event> get onObsolete => obsoleteEvent.forTarget(this);