1. 构造函数
2. AbsoluteOrientationSensor
3. 属性
4. activated
5. hashCode
6. hasReading
7. on
8. onError
9. quaternion
10. runtimeType
11. timestamp
12. 方法
13. addEventListener
14. dispatchEvent
15. noSuchMethod
16. populateMatrix
17. removeEventListener
18. start
19. stop
20. toString
21. 运算符
22. operator ==