1. Dart
2. dart:html
3. FormData
4. has method

FormData class

1. Constructors
2. FormData
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. append
8. appendBlob
9. delete
10. get
11. getAll
12. has
13. set
14. noSuchMethod
15. toString
16. Operators
17. operator ==
18. Static properties
19. supported

bool has(String name) native;