1. Dart
2. dart:html
3. DataTransferItemList
4. add method

##### DataTransferItemList class

1. Properties
2. hashCode
3. length
4. runtimeType
5. Methods
6. add
7. addData
8. addFile
9. clear
10. item
11. noSuchMethod
12. remove
13. toString
14. Operators
15. operator ==
16. operator []

description

# add method Null safety

DataTransferItem? add (

1. dynamic data_OR_file,
2. [String? type]

)

## Implementation

    DataTransferItem? add(data_OR_file, [String? type]) native;