1.

Write a code where you have to share data from the Parent to Child Component?

Answer»

You have to share the data amongst the components in numerous situations. It may consist of unrelated, parent-child, or child-parent components.

The @Input decorator allows any data to be sent from parent to child.

// parent component
import { Component } from '@angular/core';
@Component({
selector: 'app-parent',
template: `
<app-child [childMessage]="parentMessage"></app-child>
`,
styleUrls: ['./parent.component.css']
})
export class ParentComponent{
parentMessage = "message from parent"
constructor() { }
}
// child component
import { Component, Input } from '@angular/core';
@Component({
selector: 'app-child',
template: `Say {{ childMessage }}`,
styleUrls: ['./child.component.css']
})
export class ChildComponent {
 @Input() childMessage: string;
constructor() { }
}


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