RxJS BehaviorSubject

2020-10-13 10:02 更新

Subject 的变体,它需要一个初始值,并且在订阅时会发出其当前值。

  1. class BehaviorSubject<T> extends Subject {
  2. constructor(_value: T)
  3. get value: T
  4. _subscribe(subscriber: Subscriber<T>): Subscription
  5. getValue(): T
  6. next(value: T): void
  7. // inherited from index/Subject
  8. static create: Function
  9. constructor()
  10. observers: Observer<T>[]
  11. closed: false
  12. isStopped: false
  13. hasError: false
  14. thrownError: any
  15. lift<R>(operator: Operator<T, R>): Observable<R>
  16. next(value?: T)
  17. error(err: any)
  18. complete()
  19. unsubscribe()
  20. _trySubscribe(subscriber: Subscriber<T>): TeardownLogic
  21. _subscribe(subscriber: Subscriber<T>): Subscription
  22. asObservable(): Observable<T>
  23. // inherited from index/Observable
  24. static create: Function
  25. static if: typeof iif
  26. static throw: typeof throwError
  27. constructor(subscribe?: (this: Observable<T>, subscriber: Subscriber<T>) => TeardownLogic)
  28. _isScalar: boolean
  29. source: Observable<any>
  30. operator: Operator<any, T>
  31. lift<R>(operator: Operator<T, R>): Observable<R>
  32. subscribe(observerOrNext?: NextObserver<T> | ErrorObserver<T> | CompletionObserver<T> | ((value: T) => void), error?: (error: any) => void, complete?: () => void): Subscription
  33. _trySubscribe(sink: Subscriber<T>): TeardownLogic
  34. forEach(next: (value: T) => void, promiseCtor?: PromiseConstructorLike): Promise<void>
  35. pipe(...operations: OperatorFunction<any, any>[]): Observable<any>
  36. toPromise(promiseCtor?: PromiseConstructorLike): Promise<T>
  37. }

建设者

constructor(_value: T) 参量_值类型:T

物产

属性 类型 描述
T 只读。

方法

订阅() _subscribe(subscriber: Subscriber<T>): Subscription

参量: 类型:
type Subscriber

returns Subscription

getValue()
getValue(): T参量没有参数。returnsT

Returns

下一个() next(value: T): void

参量: 类型:
T

returnsvoid

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