transfer data from one component to another angular

1import { Component, Output, EventEmitter } from '@angular/core';
2
3@Component({
4  selector: 'app-child',
5  template: `
6      <button (click)="sendMessage()">Send Message</button>
7  `,
8  styleUrls: ['./child.component.css']
9})
10export class ChildComponent {
11
12  message: string = "Hola Mundo!"
13
14  @Output() messageEvent = new EventEmitter<string>();
15
16  constructor() { }
17
18  sendMessage() {
19    this.messageEvent.emit(this.message)
20  }
21}
22

1import { Component } from '@angular/core';
2
3@Component({
4  selector: 'app-parent',
5  template: `
6    Message: {{message}}
7    <app-child (messageEvent)="receiveMessage($event)"></app-child>
8  `,
9  styleUrls: ['./parent.component.css']
10})
11export class ParentComponent {
12
13  constructor() { }
14
15  message:string;
16
17  receiveMessage($event) {
18    this.message = $event
19  }
20}
21