import { Component , OnInit } from '@angular/core' ; @ Component ( { selector : 'app-counter' , templateUrl : './counter.component.html' , styleUrls : [ './counter.component.scss' ] , } ) export class CounterComponent implements OnInit { counter : number = 0 ; constructor ( ) { } ngOnInit ( ) { } increment ( ) { this . counter ++ ; } decrement ( ) { this . counter -- ; } reset ( ) { this . counter = 0 ; } }