1. Dart
2. dart:html
3. PresentationAvailability
4. value property

##### PresentationAvailability class

1. Properties
2. hashCode
3. on
4. onChange
5. runtimeType
6. value
7. Methods
8. addEventListener
9. dispatchEvent
10. noSuchMethod
11. removeEventListener
12. toString
13. Operators
14. operator ==
15. Constants
16. changeEvent

description

# value property Null safety

bool? value

## Implementation

    bool? get value native;