1. 属性
  2. boundingClientRect
  3. hashCode
  4. intersectionRatio
  5. intersectionRect
  6. isIntersecting
  7. rootBounds
  8. runtimeType
  9. target
  10. time
  11. 方法
  12. noSuchMethod
  13. toString
  14. 运算符
  15. 运算符 ==