在angular2中需要将数据从一个组件发送到另一组件

Question

After entering mobile no from login component to verify the otp from otp component i need that mobile no and country code that user entered to pass as parameters to api in otp service. I need to pass data from login to otp component how could i perform that in angular2 ?

Answer 1

Sandip is right. For example define the following shared variable inside the 'SharedDataService':

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

@Injectable()
export class SharedDataService{
    hasUserLoggedIn: boolean;
}

Then use this service inside say 'AppComponent':

@Component({
  providers: [ SharedDataService ]
})

the variable then can be used across the whole app.

Answer 2

Option 1 : You can use Shared Services

Option 2 : Use Pub-Sub way , so that can be used anywhere without injecting a service instance

Option 3 (Which I strongly suggest to use ): Use Redux

Which will help to maintain the app state .