Angular 2 event broadcast

Question

New to Angular 2. I\'m working on broadcast a event between same level component. Currently I know EventEmitter just can transfer a event to upper level component.

I

Answer 1

Use BehaviorSubject

Service:

import { Injectable } from '@angular/core';
import {BehaviorSubject} from 'rxjs/BehaviorSubject';    

@Injectable()
export class MyService {

   public mySubject: BehaviorSubject = new BehaviorSubject(0);


   public doSomething(): void { 
      let myValue: number = 123;
      this.mySubject.next(myValue);
   }
}

Component:

@Component({ 
  selector: 'app-my-component',
  templateUrl: './my-component.component.html',
  styleUrls: ['./my-component.component.css']
})
export class MyComponent {

   constructor(private myService: MyService) { 
        this.myService.mySubject.subscribe(
             value => {
                console.log(value); 
             }
        );
   }

}