本文实例为大家分享了Vuex实现简单购物车的具体代码，供大家参考，具体内容如下

文件结构

App.vue

<template> <div id="app"> <h3>Shopping Cart Demo</h3> <hr> <h4>Products:</h4> <ProductList /> <hr> <h4>My Cart</h4> <ShoppingCart /> </div></template><script>import ProductList from '@/components/ProductList';import ShoppingCart from '@/components/ShoppingCart'; export default { components: { ProductList, ShoppingCart }}</script>

Products.vue

<template> <div> <ul v-for="item in products" :key="item.id"> <li> {{ item.title }} - {{ item.price }} &nbsp;&nbsp; 库存： {{ item.inventory }}<br> <button :disabled="!item.inventory" @click="addToCart(item)">add to cart</button> </li> </ul> </div> </template> <script>import { mapGetters, mapActions } from 'vuex';export default { computed: { // ...mapGetters('products',{ // products: 'allProducts' // }) ...mapGetters({ products: 'products/allProducts' }) }, methods: { ...mapActions('cart',['addToCart']) }, created() { this.$store.dispatch('products/getAllProducts'); } }</script>

ShoppingCart.vue

<template> <div> <ul v-for="item in products" :key="item.id"> <li>{{ item.title }} *{{ item.quantity }}</li> </ul> <div>total: {{ total }}</div> </div></template><script>import { mapGetters } from 'vuex';export default { computed: { ...mapGetters('cart', { products: 'cartProducts', total: 'cartTotalPrice' }) }}</script>

modules/products.js

import api from '../../api'; const state = { all: []} const getters = { allProducts: state => state.all} const actions = { // 获取初始商品数据 getAllProducts({ commit }) { api.getProducts(products => commit('setProducts', products)); }} const mutations = { setProducts(state, products) { state.all = products; }, // 减少该商品库存 decreamentInventory(state, { id }) { let productItem = state.all.find(item => item.id === id); productItem.inventory --; }} export default { namespaced: true, state, getters, actions, mutations}

modules/cart.js

const state = { addedList: []} const getters = { cartProducts(state, getters, rootState) { return state.addedList.map((item, index) => { let productItem = rootState.products.all.find(product => product.id === item.id); return { title: productItem.title, price: productItem.price, quantity: item.quantity } }) }, cartTotalPrice(state, getters) { return getters.cartProducts.reduce((total, product) => { return total + (product.price * product.quantity); }, 0); }} const actions = { addToCart({ state, commit }, product) { if (product.inventory > 0) { let productItem = state.addedList.find(item => item.id === product.id); if (productItem) { commit('increamentItemQuantity', productItem); } else { commit('pushItemToCart', product); } commit('products/decreamentInventory', product, { root: true }); } }} const mutations = { // 增加购物车中同等商品的数量 increamentItemQuantity(state, { id }) { let productItem = state.addedList.find(item => item.id === id); productItem.quantity ++; }, // 将商品加入购物车 pushItemToCart(state, { id }) { state.addedList.push({ id, quantity: 1 }) }, } export default { namespaced: true, state, getters, actions, mutations}

store/index.js

import Vue from 'vue';import Vuex from 'vuex';import cart from './modules/cart';import products from './modules/products'; Vue.use(Vuex); export default new Vuex.Store({ modules: { cart, products }});

main.js

import Vue from "vue";import App from "@/components/App.vue";import store from "@/store"; Vue.config.productionTip = false; new Vue({ store, render: h => h(App)}).$mount("#app");

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。