angular event emitter
@Output() open: EventEmitter<any> = new EventEmitter();
toggel() {
this.open.emit(null);
}angular event emitter
@Output() open: EventEmitter<any> = new EventEmitter();
toggel() {
this.open.emit(null);
}use of eventemitter in angular
@Component({
selector : 'child',
template : `
<button (click)="sendNotification()">Notify my parent!</button>
`
})
class Child {
@Output() notifyParent: EventEmitter<any> = new EventEmitter();
sendNotification() {
this.notifyParent.emit('Some value to send to the parent');
}
}
@Component({
selector : 'parent',
template : `
<child (notifyParent)="getNotification($event)"></child>
`
})
class Parent {
getNotification(evt) {
// Do something with the notification (evt) sent by the child!
}
}what does event emitter do in angular
Data flows into your component via property bindings and flows out of your component through event bindings. If you want your component to notify his parent about something you can use the Output decorator with EventEmitter to create a custom event.Copyright © 2021 Codeinu
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