1. Properties
2. binaryType
3. hashCode
4. id
5. on
6. onMessage
7. runtimeType
8. state
9. url
10. Methods
11. addEventListener
12. close
13. dispatchEvent
14. noSuchMethod
15. removeEventListener
16. send
17. terminate
18. toString
19. Operators
20. operator ==
21. Constants
22. messageEvent