/Javascript/AngularJS/Pass data from parent to child component angular 8

Pass data from parent to child component angular 8

Send event to child component angular

Parent-Component

eventsSubject: Subject<void> = new Subject<void>();

emitEventToChild() {
  this.eventsSubject.next();
}


Parent-HTML

<child [events]="eventsSubject.asObservable()"> </child>


Child-Component

private eventsSubscription: Subscription;

@Input() events: Observable<void>;

ngOnInit(){
  this.eventsSubscription = this.events.subscribe(() => doSomething());
}

ngOnDestroy() {
  this.eventsSubscription.unsubscribe();
}

Source: stackoverflow.com

Angular passing data to child component

Parent component:
<app-child-component [item]="data"></app-child-component>

Child component.ts
import { Component, Input } from '@angular/core'; // First, import Input
export class ItemDetailComponent {
  @Input() item = ''; // decorate the property with @Input()
}

Source: angular.io

Pass data from parent to child component angular 8

Parent-Component

eventsSubject: Subject<void> = new Subject<void>();

emitEventToChild() {
  this.eventsSubject.next();
}


Parent-HTML

<child [events]="eventsSubject.asObservable()"> </child>


Child-Component

private eventsSubscription: Subscription;

@Input() events: Observable<void>;

ngOnInit(){
  this.eventsSubscription = this.events.subscribe(() => doSomething());
}

ngOnDestroy() {
  this.eventsSubscription.unsubscribe();
}

Similar codes

0 vote192 views1 answer
Put my angular project in subfolder. 500 INTERNAL ERROR
Javascript AngularJS
0 vote193 views1 answer
Pattern validator angular
Javascript AngularJS
0 vote200 views1 answer
Cannot find name json angular 7
Javascript AngularJS
0 vote184 views2 answers
15) Which of the following directive is used to initialize an angular app? A. ng-app ANSWER B.ng-model C.ng-controller D.None of the above
Javascript AngularJS
24 votes215 views6 answers
Angular routes
Javascript AngularJS
0 vote189 views2 answers
Set @Output through modalref angular
Javascript AngularJS
0 vote146 views1 answer
Angular unique app id
Javascript AngularJS
0 vote189 views4 answers
Angular file upload app with django
Javascript AngularJS
0 vote204 views2 answers
Function with return type in angular
Javascript AngularJS
1 vote193 views4 answers
Angular 11 features
Javascript AngularJS