Hi I'm practicing on a small store website project this one but I'm having a problem with moving the items to the cart.
in the source code in file app/components/product-list/product-list.component.ts line 33 :
const cartIdx = cartProducts.findIndex(cart => cart.id === cartProduct.id)
when I do the same line I face the error: Property 'id' does not exist on type 'never'
that's my code:
onSubmit(cartItem: Product){
let toCartItem: CartItems[] = [];
let alertMessage: string = '';
const itemCount = this.selectedOption;
const cartItems: CartItems[] | [] = this.ProductserveService.getCartItems();
const itemID = cartItems.findIndex(cart => cart.id === cartItem.id)
toCartItem = cartItems;
if((itemID === -1) || (cartItems.length === 0)){
toCartItem.push(Object.assign(cartItem, {option: itemCount}));
alertMessage = `New Item '${cartItem.name}' added to cart`;
}
this.ProductserveService.addToCart(toCartItem);
alert(alertMessage);
this.printLocalData();
return false;}
anyone know why is that ?
我已经浏览了您的代码,您错过了 findIndex 中购物车的数据类型,将其const cartIdx = cartProducts.findIndex(cart: CartProduct => cart.id === cartProduct.id)
from const cartIdx = cartProducts.findIndex(cart => cart.id === cartProduct.id)
。
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