How can a child component trigger an event in its parent component?

Question

How can a child component trigger an event in its parent component?

Currently, I have tabs implemented with a form and a button in tab1. In the parent component, there is an event that deactivates the current tab and activates the next one. Can anyone advise on how to call this event from the child component?

  gotosecondtab(){
this.firsttabactive=false;
this.secondtabactive=true;
}

The above code snippet represents the event in the parent component which I would like to trigger from the child component.

onSubmit(): void {  
console.log('you submitted value: ', this.myForm.value); 
//I need assistance on calling the parent event here
}

I aim to execute the `gotosecondtab()` event when triggering the `onSubmit()` event. Any help or guidance would be greatly appreciated.

typescript angular

Answer 1

Answer №1

To implement a custom event within your child component, follow these steps:

@Component({
  selector: 'child-component',
  (...)
})
export class ChildComponent {
  @Output() customEvent: EventEmitter;

  constructor() {
    this.customEvent = new EventEmitter();
  }

  onSubmit(): void {  
    console.log('Submitted value: ', this.myForm.value); 
    this.customEvent.emit();
  }
}

Next, you can register and listen for the custom event in the parent component like so:

@Component({
  template: `
    <child-component (customEvent)="handleCustomEvent()"></child-component>
  `,
   directives: [ ChildComponent ]
  (...)
})
export class ParentComponent {
  (...)

  handleCustomEvent() {
    // Action to be performed when the custom event is triggered
  }
}

I hope this explanation helps guide you through the process. Best regards, Thierry

Answer 2

To implement a custom event within your child component, follow these steps:

@Component({
  selector: 'child-component',
  (...)
})
export class ChildComponent {
  @Output() customEvent: EventEmitter;

  constructor() {
    this.customEvent = new EventEmitter();
  }

  onSubmit(): void {  
    console.log('Submitted value: ', this.myForm.value); 
    this.customEvent.emit();
  }
}

Next, you can register and listen for the custom event in the parent component like so:

@Component({
  template: `
    <child-component (customEvent)="handleCustomEvent()"></child-component>
  `,
   directives: [ ChildComponent ]
  (...)
})
export class ParentComponent {
  (...)

  handleCustomEvent() {
    // Action to be performed when the custom event is triggered
  }
}

I hope this explanation helps guide you through the process. Best regards, Thierry

How can a child component trigger an event in its parent component?

Answer №1

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