/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 vote343 views1 answer
Get page link angular
Javascript AngularJS
2 votes335 views3 answers
Change route on button click angular
Javascript AngularJS
0 vote366 views1 answer
Collapse in angular 4
Javascript AngularJS
0 vote354 views1 answer
Animation end event angular
Javascript AngularJS
0 vote347 views1 answer
Angular add debounce time before putting valu in subject next
Javascript AngularJS
0 vote361 views1 answer
Angular 8 enable routing
Javascript AngularJS
0 vote364 views1 answer
Angular chart
Javascript AngularJS
0 vote332 views1 answer
Angular2-tree-diagram
Javascript AngularJS
7 votes356 views2 answers
Angular 6 key value pair getvalue example
Javascript AngularJS
0 vote354 views1 answer
Use promis with date angular
Javascript AngularJS