1. Dart
2. dart:html
3. SpeechSynthesisEvent
4. charIndex property

SpeechSynthesisEvent class

1. Properties
2. charIndex
3. elapsedTime
4. name
5. utterance
6. bubbles
7. cancelable
8. composed
9. currentTarget
10. defaultPrevented
11. eventPhase
12. hashCode
13. isTrusted
14. matchingTarget
15. path
16. runtimeType
17. target
18. timeStamp
19. type
20. Methods
21. composedPath
22. noSuchMethod
23. preventDefault
24. stopImmediatePropagation
25. stopPropagation
26. toString
27. Operators
28. operator ==

int get charIndex native;