angular_1_4.ts

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

@Component({
    selector: 'app-counter',
    templateUrl: './counter.component.html',
    styleUrls: ['./counter.component.scss']
})

export class CounterComponent implements OnInit {

    public counter = 0;

    constructor() { }

    ngOnInit(): void { }

    public increment(): void {
        this.counter += 1;
    }

    public decrement(): void {
        this.counter -= 1;
    }

    public clearCounter(): void {
        this.counter = 0;
    }

}