1. Dart
2. dart:html
3. SpeechSynthesisUtterance
4. onError property

##### SpeechSynthesisUtterance class

1. Constructors
2. SpeechSynthesisUtterance
3. Properties
4. hashCode
5. lang
6. on
7. onBoundary
8. onEnd
9. onError
10. onMark
11. onPause
12. onResume
13. onStart
14. pitch
15. rate
16. runtimeType
17. text
18. voice
19. volume
20. Methods
21. addEventListener
22. dispatchEvent
23. noSuchMethod
24. removeEventListener
25. toString
26. Operators
27. operator ==
28. Constants
29. boundaryEvent
30. endEvent
31. errorEvent
32. markEvent
33. pauseEvent
34. resumeEvent
35. startEvent

description

# onError property Null safety

Stream<Event> onError

Stream of `error` events handled by this SpeechSynthesisUtterance.

## Implementation

    Stream<Event> get onError => errorEvent.forTarget(this);