How to call router outlet child component method from parent comonent

Question

I am new to angular2

I have a button in parent component, if

Answer 1

I think Event emitter can do the trick for you

Though you can use it directly in child component also but using a common service here would be a good practice

First you need to create an emitter in a service something like

export class EmitterService {
   public nameEmitter:EventEmitter=new EventEmitter(); 

    //method to get question
    changeName(name:string){   
        this.nameEmitter.emit(name)    
    }

}

Then in root component inject service dependency and call change name method to emit the change

 constructor(private emitter :EmitterService) {}
 this.emitter.changeName("New Name");

And at the end in child component subscribe to changes

this.emitter.nameEmitter.subscribe(name=>{this.name=name})

Here is working plunker