Handling events from a child ng-template in an Angular parent component

Question

Handling events from a child ng-template in an Angular parent component

I'm currently working on an Angular application that includes a custom list component. This component takes in a list of items, and the component using it also utilizes a custom-list-item component with order buttons.

My main concern is how to handle order change events within the custom-list-component. What would be the most effective approach for this?

If you'd like to see the complete solution, it can be found here.

I welcome any suggestions or feedback on whether my current design for the generic list is appropriate.

angular typescript

Answer 1

Answer №1

When considering how to address this situation, there are various approaches to take. One method that stands out to me is utilizing the browser's Custom Event in conjunction with Angular's HostListener

var event = new CustomEvent(
      'myCustomEvent',
      { payload: 'data'}
    );

Subsequently, dispatch this event using:

document.dispatchEvent(event);

In order to handle it through Angular's HostListener:

@HostListener('document:myCustomEvent', ['$event', '$event.detail.direction'])
  updateNodes(event, param1) {
    console.log(param1); //param 1 has $event.detail.direction value
  }

Detailed example available here

Official documentation for HostListener

Additional information on CustomEvent

Answer 2

When considering how to address this situation, there are various approaches to take. One method that stands out to me is utilizing the browser's Custom Event in conjunction with Angular's HostListener

var event = new CustomEvent(
      'myCustomEvent',
      { payload: 'data'}
    );

Subsequently, dispatch this event using:

document.dispatchEvent(event);

In order to handle it through Angular's HostListener:

@HostListener('document:myCustomEvent', ['$event', '$event.detail.direction'])
  updateNodes(event, param1) {
    console.log(param1); //param 1 has $event.detail.direction value
  }

Detailed example available here

Official documentation for HostListener

Additional information on CustomEvent

Handling events from a child ng-template in an Angular parent component

Answer №1

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