使用vue实现多规格选择实例（SKU）

<template>  <div class="wrap wrap-sku">    <div class="product-box">      <div class="product-content">        <div class="product-delcom" v-for="(ProductItem,n) in simulatedDATA.specifications">          <p>{{ProductItem.name}}</p>          <ul class="product-footerlist clearfix">            <li v-for="(oItem,index) in ProductItem.item"              v-on:click="specificationBtn(oItem.name,n,$event,index)"              v-bind:class="[oItem.isShow?'':'noneActive',subIndex[n] == index?'productActive':'']">              {{oItem.name}}            </li>          </ul>        </div>        <p v-if="price" class="price">¥{{price}}</p>      </div>      <div class="product-footer">        <a href="javascript:" rel="external nofollow" >立即购买</a>      </div>    </div>  </div></template>

<script>  export default {    data() {      return {        simulatedDATA: { //模拟后台返回的数据 多规格          "difference": [            { //所有的规格可能情况都在这个数组里              "id": "19",              "price": "200.00",              "stock": "19",              "difference": "100,白色"            },            {              "id": "20",              "price": "100.00",              "stock": "29",              "difference": "200,白色"            },            {              "id": "21",              "price": "300.00",              "stock": "10",              "difference": "100,黑色"            },            {              "id": "22",              "price": "900.00",              "stock": "0",              "difference": "200,黑色"            },            {              "id": "23",              "price": "600.00",              "stock": "48",              "difference": "100,绿色"            },            {              "id": "24",              "price": "500.00",              "stock": "40",              "difference": "200,绿色"            },            {              "id": "25",              "price": "90.00",              "stock": "0",              "difference": "100,蓝色"            },            {              "id": "26",              "price": "40.00",              "stock": "20",              "difference": "200,蓝色"            }          ],          "specifications": [            { //这里是要被渲染字段              "name": "尺寸",              "item": [                {                  "name": "100",                },                {                  "name": "200",                }              ]            },            {              "name": "颜色",              "item": [                {                  "name": "白色",                },                {                  "name": "蓝色",                },                {                  "name": "黑色",                },                {                  "name": "绿色",                }              ]            }          ]        },        selectArr: [], //存放被选中的值        shopItemInfo: {}, //存放要和选中的值进行匹配的数据        subIndex: [], //是否选中 因为不确定是多规格还是单规格，所以这里定义数组来判断        price:'' //选中规格的价钱      }    },    methods: {      specificationBtn: function (item, n, event, index) {        var self = this;        if (self.selectArr[n] != item) {          self.selectArr[n] = item;          self.subIndex[n] = index;        } else {          self.selectArr[n] = "";          self.subIndex[n] = -1; //去掉选中的颜色        }        self.checkItem();      },      checkItem: function () {        var self = this;        var option = self.simulatedDATA.specifications;        var result = []; //定义数组储存被选中的值        for(var i in option){          result[i] = self.selectArr[i] ? self.selectArr[i] : '';        }        for (var i in option) {          var last = result[i]; //把选中的值存放到字符串last去          for (var k in option[i].item) {            result[i] = option[i].item[k].name; //赋值，存在直接覆盖，不存在往里面添加name值            option[i].item[k].isShow = self.isMay(result); //在数据里面添加字段isShow来判断是否可以选择          }          result[i] = last; //还原，目的是记录点下去那个值，避免下一次执行循环时被覆盖        }        if(this.shopItemInfo[result]){          this.price = this.shopItemInfo[result].price || ''        }        self.$forceUpdate(); //重绘      },      isMay: function (result) {        for (var i in result) {          if (result[i] == '') {            return true; //如果数组里有为空的值，那直接返回true          }        }        return this.shopItemInfo[result].stock == 0 ? false : true; //匹配选中的数据的库存，若不为空返回true反之返回false      }    },    created: function () {      var self = this;      for (var i in self.simulatedDATA.difference) {        self.shopItemInfo[self.simulatedDATA.difference[i].difference] = self.simulatedDATA.difference[i]; //修改数据结构格式，改成键值对的方式，以方便和选中之后的值进行匹配      }      self.checkItem();    }  }</script>

<style lang="scss" rel="stylesheet">  .wrap-sku {    .product-box {      width: 1200px;      display: block;      margin: 0 auto;    }    .product-content {      margin-bottom: 100px;    }    .product-delcom {      color: #323232;      font-size: 26px;      border-bottom: 1px solid #EEEEEE;      padding: 30px 0;    }    .product-footerlist {      margin-top: 10px;    }    .product-footerlist li {      border: 1px solid #606060;      border-radius: 5px;      color: #606060;      text-align: center;      padding: 10px 30px;      float: left;      margin-right: 20px;      cursor: pointer;    }    .product-footerlist li.productActive {      background-color: #1A1A29;      color: #fff;      border: 1px solid #1A1A29;    }    .product-footerlist li.noneActive {      background-color: #ccc;      opacity: 0.4;      color: #000;      pointer-events: none;    }    .product-footer {      background-color: #1A1A29;      text-align: center;    }    .product-footer a {      color: #fff;      text-decoration: none;      height: 88px;      line-height: 88px;      font-size: 28px;    }    .price{      font-size: 30px;      height: 60px;      line-height: 60px;    }  }</style>