Accepting & Receiving data with input / output decorators properties [Parent to Child] - @input() , @output() decorator

app.component.html

<app-child-input-decorator [counter]="counterParent" (counterEmit)="receiveCounter($event)" ></app-child-input-decorator>

app.component.ts

import { Component } from '@angular/core';
import { ChildInputDecoratorComponent } from "./child-input-decorator/child-input-decorator.component";

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [ ChildInputDecoratorComponent],
  templateUrl: './app.component.html',
  styleUrl: './app.component.scss'
})
export class AppComponent {
  public counterParent:number = 25;
  
  public receiveCounter(counter: number) {
    this.counterParent = counter;
  }
}

child-input-decorator.component.html

<div>
    Counter value: {{counter}}
</div>

<div class="my-2 card card-body">
    <input type="number" (input)="setCounter()" [(ngModel)]="counter" class="form-control">
</div>

child-input-decorator.component.ts

import { Component, EventEmitter, Input, Output } from '@angular/core';
import { FormsModule } from '@angular/forms';

@Component({
  selector: 'app-child-input-decorator',
  standalone: true,
  imports: [FormsModule],
  templateUrl: './child-input-decorator.component.html',
  styleUrl: './child-input-decorator.component.scss'
})
export class ChildInputDecoratorComponent {

  @Input() counter: number = 25;

  @Output() counterEmit: EventEmitter<number> = new EventEmitter<number>();

  public setCounter() {
    this.counterEmit.emit(this.counter);
  }
}