1. Dart
2. dart:html
3. VideoTrackList
4. onChange property

VideoTrackList class

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

Stream<Event> get onChange => changeEvent.forTarget(this);