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. noSuchMethod
14. set
15. toString
16. Operators
17. operator ==
18. Static properties
19. supported

bool has(String name) native;