我正在尝试向ProductCard中的addToCart按钮添加功能。我需要它被禁用，一旦纸杯蛋糕已经添加到我的购物车阵列。当通过MiniCart中的RemoveItem/clearCart移除时，我需要再次启用按钮。我尝试过if else语句，并尝试添加谷歌的各种功能，但尚未成功。我非常感谢您的帮助^^

store.js

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

export const store = new Vuex.Store({
    state: {
        cart: [],
        cupcake: [{
            title: 'Cream',
            price: 12.99,
            image: 'https://images.pexels.com/photos/1055270/pexels-photo-1055270.jpeg?auto=compress&cs=tinysrgb&dpr=3&h=750&w=1260',
            id: 1,
            quantity: 1
        },
        {
            title: 'Choc',
            price: 10.99,
            image: 'https://images.pexels.com/photos/1055272/pexels-photo-1055272.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 2,
            quantity: 1
        },
        {
            title: 'Frosting',
            price: 14.99,
            image: 'https://images.pexels.com/photos/1055271/pexels-photo-1055271.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 3,
            quantity: 1
        },
        {
            title: 'Berry',
            price: 9.99,
            image: 'https://images.pexels.com/photos/3081657/pexels-photo-3081657.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 4,
            quantity: 1
        },
        {
            title: 'Deluxe',
            price: 19.99,
            image: 'https://images.pexels.com/photos/1998634/pexels-photo-1998634.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 5,
            quantity: 1
        },
        {
            title: 'Oreo',
            price: 19.99,
            image: 'https://images.pexels.com/photos/783274/pexels-photo-783274.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 6,
            quantity: 1
        },
        ]
    },
});

productcard.vue

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

export const store = new Vuex.Store({
    state: {
        cart: [],
        cupcake: [{
            title: 'Cream',
            price: 12.99,
            image: 'https://images.pexels.com/photos/1055270/pexels-photo-1055270.jpeg?auto=compress&cs=tinysrgb&dpr=3&h=750&w=1260',
            id: 1,
            quantity: 1
        },
        {
            title: 'Choc',
            price: 10.99,
            image: 'https://images.pexels.com/photos/1055272/pexels-photo-1055272.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 2,
            quantity: 1
        },
        {
            title: 'Frosting',
            price: 14.99,
            image: 'https://images.pexels.com/photos/1055271/pexels-photo-1055271.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 3,
            quantity: 1
        },
        {
            title: 'Berry',
            price: 9.99,
            image: 'https://images.pexels.com/photos/3081657/pexels-photo-3081657.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 4,
            quantity: 1
        },
        {
            title: 'Deluxe',
            price: 19.99,
            image: 'https://images.pexels.com/photos/1998634/pexels-photo-1998634.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 5,
            quantity: 1
        },
        {
            title: 'Oreo',
            price: 19.99,
            image: 'https://images.pexels.com/photos/783274/pexels-photo-783274.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 6,
            quantity: 1
        },
        ]
    },
});

minicart.vue

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

export const store = new Vuex.Store({
    state: {
        cart: [],
        cupcake: [{
            title: 'Cream',
            price: 12.99,
            image: 'https://images.pexels.com/photos/1055270/pexels-photo-1055270.jpeg?auto=compress&cs=tinysrgb&dpr=3&h=750&w=1260',
            id: 1,
            quantity: 1
        },
        {
            title: 'Choc',
            price: 10.99,
            image: 'https://images.pexels.com/photos/1055272/pexels-photo-1055272.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 2,
            quantity: 1
        },
        {
            title: 'Frosting',
            price: 14.99,
            image: 'https://images.pexels.com/photos/1055271/pexels-photo-1055271.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 3,
            quantity: 1
        },
        {
            title: 'Berry',
            price: 9.99,
            image: 'https://images.pexels.com/photos/3081657/pexels-photo-3081657.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 4,
            quantity: 1
        },
        {
            title: 'Deluxe',
            price: 19.99,
            image: 'https://images.pexels.com/photos/1998634/pexels-photo-1998634.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 5,
            quantity: 1
        },
        {
            title: 'Oreo',
            price: 19.99,
            image: 'https://images.pexels.com/photos/783274/pexels-photo-783274.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 6,
            quantity: 1
        },
        ]
    },
});

顺晟科技：

就这样。演示https://codesandbox.io/s/jolly-shirley-dgg10

模板:

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

export const store = new Vuex.Store({
    state: {
        cart: [],
        cupcake: [{
            title: 'Cream',
            price: 12.99,
            image: 'https://images.pexels.com/photos/1055270/pexels-photo-1055270.jpeg?auto=compress&cs=tinysrgb&dpr=3&h=750&w=1260',
            id: 1,
            quantity: 1
        },
        {
            title: 'Choc',
            price: 10.99,
            image: 'https://images.pexels.com/photos/1055272/pexels-photo-1055272.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 2,
            quantity: 1
        },
        {
            title: 'Frosting',
            price: 14.99,
            image: 'https://images.pexels.com/photos/1055271/pexels-photo-1055271.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 3,
            quantity: 1
        },
        {
            title: 'Berry',
            price: 9.99,
            image: 'https://images.pexels.com/photos/3081657/pexels-photo-3081657.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 4,
            quantity: 1
        },
        {
            title: 'Deluxe',
            price: 19.99,
            image: 'https://images.pexels.com/photos/1998634/pexels-photo-1998634.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 5,
            quantity: 1
        },
        {
            title: 'Oreo',
            price: 19.99,
            image: 'https://images.pexels.com/photos/783274/pexels-photo-783274.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 6,
            quantity: 1
        },
        ]
    },
});

方法:

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

export const store = new Vuex.Store({
    state: {
        cart: [],
        cupcake: [{
            title: 'Cream',
            price: 12.99,
            image: 'https://images.pexels.com/photos/1055270/pexels-photo-1055270.jpeg?auto=compress&cs=tinysrgb&dpr=3&h=750&w=1260',
            id: 1,
            quantity: 1
        },
        {
            title: 'Choc',
            price: 10.99,
            image: 'https://images.pexels.com/photos/1055272/pexels-photo-1055272.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 2,
            quantity: 1
        },
        {
            title: 'Frosting',
            price: 14.99,
            image: 'https://images.pexels.com/photos/1055271/pexels-photo-1055271.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 3,
            quantity: 1
        },
        {
            title: 'Berry',
            price: 9.99,
            image: 'https://images.pexels.com/photos/3081657/pexels-photo-3081657.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 4,
            quantity: 1
        },
        {
            title: 'Deluxe',
            price: 19.99,
            image: 'https://images.pexels.com/photos/1998634/pexels-photo-1998634.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 5,
            quantity: 1
        },
        {
            title: 'Oreo',
            price: 19.99,
            image: 'https://images.pexels.com/photos/783274/pexels-photo-783274.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 6,
            quantity: 1
        },
        ]
    },
});

如果将此disabled-method添加到按钮中，如果纸杯蛋糕已经在购物车中，并且您仍然可以添加其他纸杯蛋糕，则按钮将被禁用:

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

export const store = new Vuex.Store({
    state: {
        cart: [],
        cupcake: [{
            title: 'Cream',
            price: 12.99,
            image: 'https://images.pexels.com/photos/1055270/pexels-photo-1055270.jpeg?auto=compress&cs=tinysrgb&dpr=3&h=750&w=1260',
            id: 1,
            quantity: 1
        },
        {
            title: 'Choc',
            price: 10.99,
            image: 'https://images.pexels.com/photos/1055272/pexels-photo-1055272.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 2,
            quantity: 1
        },
        {
            title: 'Frosting',
            price: 14.99,
            image: 'https://images.pexels.com/photos/1055271/pexels-photo-1055271.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 3,
            quantity: 1
        },
        {
            title: 'Berry',
            price: 9.99,
            image: 'https://images.pexels.com/photos/3081657/pexels-photo-3081657.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 4,
            quantity: 1
        },
        {
            title: 'Deluxe',
            price: 19.99,
            image: 'https://images.pexels.com/photos/1998634/pexels-photo-1998634.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 5,
            quantity: 1
        },
        {
            title: 'Oreo',
            price: 19.99,
            image: 'https://images.pexels.com/photos/783274/pexels-photo-783274.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 6,
            quantity: 1
        },
        ]
    },
});

您的AddToCart-function还可以重写为:

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

export const store = new Vuex.Store({
    state: {
        cart: [],
        cupcake: [{
            title: 'Cream',
            price: 12.99,
            image: 'https://images.pexels.com/photos/1055270/pexels-photo-1055270.jpeg?auto=compress&cs=tinysrgb&dpr=3&h=750&w=1260',
            id: 1,
            quantity: 1
        },
        {
            title: 'Choc',
            price: 10.99,
            image: 'https://images.pexels.com/photos/1055272/pexels-photo-1055272.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 2,
            quantity: 1
        },
        {
            title: 'Frosting',
            price: 14.99,
            image: 'https://images.pexels.com/photos/1055271/pexels-photo-1055271.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 3,
            quantity: 1
        },
        {
            title: 'Berry',
            price: 9.99,
            image: 'https://images.pexels.com/photos/3081657/pexels-photo-3081657.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 4,
            quantity: 1
        },
        {
            title: 'Deluxe',
            price: 19.99,
            image: 'https://images.pexels.com/photos/1998634/pexels-photo-1998634.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 5,
            quantity: 1
        },
        {
            title: 'Oreo',
            price: 19.99,
            image: 'https://images.pexels.com/photos/783274/pexels-photo-783274.jpeg?auto=compress&cs=tinysrgb&h=750&w=1260',
            id: 6,
            quantity: 1
        },
        ]
    },
});