How can I access data from child component without emiting it-CodePudding

So like the picture discribes, The parent component is in blue and the red is the child component, so I want to type in some data in the input which is in the child component and when I click on the add answer button, i want to get the value from the input sent to the parent component. can anyone help me with that ?

I tried onchange event listener on the input so I can emit the value but it didnt work

CodePudding user response：

https://angular.io/guide/inputs-outputs

Event emitters are a fundamental Angular concept. The child has an EventEmitter which the parent listens to. To trigger an event on a button click in the child, your code should look similar to the following:

<!-- parent template -->
<my-child (myEvent)="handleMyEvent($event)"></my-child>

// child component
@Component({...}))
export class MyChildComponent {
  
  @Output() myEvent = new EventEmitter<SomeType>()
  
  handleButtonClicked() {
    this.myEvent.emit(someValue)
  }

<!--child template-->
<button (click)="handleButtonClicked()>Some button</button>

UPDATE:

In this case, you'll need to store the contents of the input on the parent component, or access them at the time of add.

your child component could have a listener on the input that emits the value of the input:

<!-- child template -->
<input (change)="emitChange($event)" type="text" />

// child component
@Output() myEvent = newEventEmitter<string>()
emitChange(event: string) {
  this.myEvent.emit(event)
}

Your parent component's handleMyEvent function would need to manage storing the values emitted from the child component(s).