Enhancing Angular functionality with the addition of values to an array in a separate component

I need help with adding a value to an array in the 2nd component when a button in the 1st component is clicked. I am working on Angular 4. How can I achieve this?

@Component({
  selector: 'app-sibling',
  template: `
    {{message}}
    <button (click)="newMessage()">New Message</button>
  `,
  styleUrls: ['./sibling.component.css']
})
newMessage() {
    console.log("button clicked");
  }

Answer №1

If your goal is to establish communication between two components,

You have the option of utilizing a service with Array functionality. In Angular, a service operates as a singleton, meaning it exists as a single instance. Consequently, if multiple components access the service, they will be accessing the same shared data.

export class cartService{
    prod :any = [];        
    UpdateArray (newObject: any) {
        this.prod.push(newObject);         
    }
}

Within your component, you can implement the following:

  this._cartService.UpdateArray(this.prod);

The 'any' type in the code can be substituted with your specific object type.

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