如何从 Angular8 中的另一个组件传递一个组件的值（独立组件）

Question

I want to reset the value of a variable of another component. 2 components are independent ones. I want to reset the value of the particular variable. Once the value is updated need to refresh the UI of that component to reflect the changes.

Expecting something like Broadcast/Emit and On in AngularJS

Is it possible to do something with RxJS? If yes please share me some useful links.

Answer 1

you can use a Service to share an EventEmitter: https://angular.io/api/core/EventEmitter

@Injectable()
export class YourSharedService {
  private _event = new EventEmitter<any>();

  get event(): EventEmitter<any> {
    return this._event;
  }
}

Then just emit in the first component:

this.yourService.event.emit();

And subscribe in the other:

    this.yourService.event.subscribe(() =>  {});

Usefull, only if your components are really independent.