1. Dart
2. dart:html
3. DeviceOrientationEvent
4. alpha property

##### DeviceOrientationEvent class

1. Constructors
2. DeviceOrientationEvent
3. Properties
4. absolute
5. alpha
6. beta
7. bubbles
8. cancelable
9. composed
10. currentTarget
11. defaultPrevented
12. eventPhase
13. gamma
14. hashCode
15. isTrusted
16. matchingTarget
17. path
18. runtimeType
19. target
20. timeStamp
21. type
22. Methods
23. composedPath
24. noSuchMethod
25. preventDefault
26. stopImmediatePropagation
27. stopPropagation
28. toString
29. Operators
30. operator ==

description

# alpha property Null safety

num? alpha

## Implementation

    num? get alpha native;