本文实例讲述了vuex实现的简单购物车功能。分享给大家供大家参考，具体如下：

购物车组件

<template> <div> <h1>vuex-shopCart</h1> <div class="shop-listbox"> <shop-list/> </div> <h2>已选商品</h2> <div class="shop-cartbox"> <shop-cart/> </div> </div></template><script> import shopList from "./shop-list"; import shopCart from './shop-cart'; export default{ name:'shop', components:{ 'shop-list':shopList, 'shop-cart':shopCart } }</script>

商品列表

<template> <div class="shop-list"> <table> <tr class="shop-listtitle"> <td>id</td> <td>名称</td> <td>价格</td> <td>操作</td> </tr> <tr v-for="item in shopList" class="shop-listinfo"> <td>{{item.id}}</td> <td>{{item.name}}</td> <td>{{item.price}}</td> <td><button @click="addToCart(item)">加入购物车</button></td> </tr> </table> </div></template><script> import{mapActions} from "vuex"; export default{ name:'shopList', data(){ return{ } }, computed:{ shopList(){ return this.$store.getters.getShopList } }, methods:{ ...mapActions(['addToCart']) } }</script><style lang="less" scoped> @import url('../../static/public.less');</style>

选中商品列表

<template> <div class="shop-list"> <table> <tr class="shop-listtitle"> <td>id</td> <td>名称</td> <td>价格</td> <td>数量</td> <td>操作</td> </tr> <tr v-for="item in cartData" class="shop-listinfo"> <td>{{item.id}}</td> <td>{{item.name}}</td> <td>{{item.price}}</td> <td>{{item.num}}</td> <td><button class="shop-dele dele-btn" @click="deletShop(item)">删除</button></td> </tr> <tr v-if="cartData.length<=0"> <td colspan="5">暂无数据</td> </tr> <tr> <td colspan="2">总数：{{totalNum}}</td> <td colspan="2">总价格：{{totalPrice}}</td> <td><button class="dele-cart dele-btn" @click="clearCart">清空购物车</button></td> </tr> </table> </div></template><script> import {mapGetters,mapActions} from "vuex"; export default{ name:'shopCart', data(){ return{ } }, computed:{ ...mapGetters({ cartData:'addShopList', totalNum:'totalNum', totalPrice:'totalPrice' }) }, methods:{ ...mapActions({ clearCart:'clearToCart', deletShop:'deletToShop' }) } }</script><style lang="less" scoped> @import url('../../static/public.less'); .dele-btn{ background-color: red !important; } .dele-btn:hover{ background-color: #bd0000 !important; }</style>

vuex 创建

npm install vuex --save,创建vuex文件夹，在文件夹中创建store.js，引入vuex；

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

建立一个模块文件夹modules，里面创建创建当个store模块，然后默认输出，在store.js中引入；

const state = { shop_list: [{ id: 11, name: '鱼香肉丝', price: 12, }, { id: 22, name: '宫保鸡丁', price: 14 }, { id: 34, name: '土豆丝', price: 10 }, { id: 47, name: '米饭', price: 2 },{ id: 49, name: '蚂蚁上树', price: 13 }, { id: 50, name: '腊肉炒蒜薹', price: 15 }], add:[]}const getters ={ //获取商品列表 getShopList:state => state.shop_list, //获取购物车列表 addShopList:state => { return state.add.map(({id,num})=>{ let product = state.shop_list.find(n => n.id == id); if(product){ return{ ...product, num } } }) }, //获取总数量 totalNum:(state,getters) =>{ let total =0; getters.addShopList.map(n=>{ total += n.num; }) return total; }, //计算总价格 totalPrice:(state,getters)=>{ let total=0; getters.addShopList.map(n=>{ total += n.num*n.price }) return total; },}const actions={ //加入购物车 addToCart({commit},product){ commit('addCart',{ id:product.id }) }, //清空购物车 clearToCart({commit}){ commit('clearCart') }, //删除单个物品 deletToShop({commit},product){ commit('deletShop',product) }}const mutations ={ //加入购物车 addCart(state,{id}){ let record = state.add.find(n => n.id == id); if(!record){ state.add.push({ id, num:1 }) }else{ record.num++; } }, //删除单个物品 deletShop(state,product){ state.add.forEach((item,i)=>{ if(item.id == product.id){ state.add.splice(i,1) } }) }, //清空购物车 clearCart(state){ state.add=[]; }}export default{ state, getters, actions, mutations}

希望本文所述对大家vue.js程序设计有所帮助。