tshirt2.ts

import { EventEmitter, Component, OnInit, Input, OnChanges, ChangeDetectionStrategy, SimpleChange, Output } from '@angular/core';





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


  @Input() tshirt ; 
  quantity; 
  error = false; 
  @Output() cancelevent = new EventEmitter();
  @Output() buyevent = new EventEmitter();
  ngOnChanges(): void {


  }
  buy(){
    
    if(this.quantity){
      if(this.quantity > this.tshirt.quanity){
        alert("not avaiable");
      }
      else{
        this.tshirt.quanity = this.tshirt.quanity - this.quantity;
        this.buyevent.emit(this.tshirt);
      }
    }
    
  }
  cancel(){
    this.cancelevent.emit(false);
  }

  ngOnInit(): void {
    console.log("init");
  }



}