Question

我想对一个数组的值求和，但是我遇到了NaN错误你能帮我吗？

const products = [
    {
        id: 1,
        title: 'T-Shirt',
        price: 98,
        quantity: 10
    },
    {
        id: 2,
        title: 'Shoes',
        price: 70,
        quantity: 17
    }
]

let cartItems = []
let parsIntPrice
let totalPrice = 0

const shoppingCart = (myId) => {

    localStorage.setItem('myProduct', JSON.stringify(products))
    const getStorage = localStorage.getItem('myProduct')
    const finalProducts = JSON.parse(getStorage)
    // SHOW EACH ITEM SELECTED
    let selectedResult = finalProducts.filter(item => item.id === myId)
    for (let product in selectedResult) {
        console.log(selectedResult[product].title)

        // CALCULATE TOTAL PRICES
        parsIntPrice = selectedResult[product].price
        totalPrice = cartItems.reduce((firstItem, secondItem) => firstItem + secondItem.parsIntPrice, 0)
        console.log(`Total Price is: ${totalPrice}`)
    }
}

Answer 1

您的cartItems数组为空，因此reduce不会对其进行迭代

如何解决NaN值问题？

1 个答案: