[angular] Call child component method from parent class - Angular

Angular – Call Child Component’s Method in Parent Component’s Template

You have ParentComponent and ChildComponent that looks like this.

parent.component.html

enter image description here

parent.component.ts

import {Component} from '@angular/core';

@Component({
  selector: 'app-parent',
  templateUrl: './parent.component.html',
  styleUrls: ['./parent.component.css']
})
export class ParentComponent {
  constructor() {
  }
}

child.component.html

<p>
  This is child
</p>

child.component.ts

import {Component} from '@angular/core';

@Component({
  selector: 'app-child',
  templateUrl: './child.component.html',
  styleUrls: ['./child.component.css']
})
export class ChildComponent {
  constructor() {
  }

  doSomething() {
    console.log('do something');
  }
}

When serve, it looks like this:

enter image description here

When user focus on ParentComponent’s input element, you want to call ChildComponent’s doSomething() method.

Simply do this:

  1. Give app-child selector in parent.component.html a DOM variable name (prefix with # – hashtag), in this case we call it appChild.
  2. Assign expression value (of the method you want to call) to input element’s focus event.

enter image description here

The result:

enter image description here

Examples related to angular

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