在Angular2中重置RxJ

Question

I have a the following properties

    private messages$: BehaviorSubject<Array<MessageModel>>;
public readonly messages: Observable<Array<MessageModel>>;

I'm pushing new messages with this.messages$.next(...) , but at some point I want to clear the pushed data. I read about the empty() method, but when I try to use it with this.messages It says that the Observable<Array<MessageModel>> has no such method. I try import 'rxjs/add/operator/map' , but it still doesn't work.

Answer 1

清除值使用

this.messages$.next()