如何根据离子3中的离子选择下拉菜单,根据产品单位数量将我的添加到购物车按钮更改为增减按钮,>
[如何根据离子3中的离子选择下拉菜单,根据产品单位数量将我的添加到购物车按钮更改为增减按钮
templateUrl: ‘build/pages/titlepage/titlepage.html’,})
export class titlePage
{
qty:any;
constructor(private nav: NavController)
{
this.qty = 1;
}
`enter code here`
// increment product qty
incrementQty()
{
console.log(this.qty+1);
this.qty += 1;
}
// decrement product qty
decrementQty()
{
if(this.qty-1 < 1 )
{
this.qty = 1
console.log(‘1->’+this.qty);
}
else{
this.qty -= 1;
console.log(‘2->’+this.qty);
}
}
}
this for .ts file