今日总结，购物车商品列表 背景模糊 +渲染成功却报undefined

				<transition name="fold">
			        <div class="shopcart-list" v-show="listShow">
			          <div class="list-header">
			            <div class="title">
			              <span>已选商品</span>
			            </div>
			            <span class="empty" @click="empty" >清空</span>
			          </div>
			          <div class="list-content" ref="listContent">
			            <ul>
			              <li v-for="food in selectFoods" class="food">
			                <span class="name">{{food.goodname}}</span>
			                <div class="price">
			                  <span class="totalPrice"><span class="sign">￥</span>{{(food.price * food.count).toFixed(2)}}</span>
			                </div>
			                <div class="cartcontrol-wrapper">
			                  <!-- 必须传:food="food"，cartcontrol组件才生效  -->
			                  <cartcontrol :food="food"></cartcontrol>
			                </div>
			              </li>
			            </ul>
			          </div>
			        </div>
			    </transition>

//购物车 列表弹出

	import cartcontrol from './cartcontrol'

//插入+.-

 fold: true       // 默认折叠

//折叠判断

	    listShow() {
        if (!this.totalCount) {
          this.fold = true;
          return false;
        }
        let show = !this.fold;
        // 添加滚动
        if (show) {
          this.$nextTick(() => {
            if (!this.shopcartListScroll) {
              this.shopcartListScroll = new BScroll(this.$refs.listContent, {
                click: true
              });
            } else {
              // 根据每次toggle计算高度来决定能否滚动
              this.shopcartListScroll.refresh();
            }
          });
        }
        return show;
      			 },

//  商品列表，如果有东西则显示  并且允许bs点击

<div class="left" @click="toggleList">

// click点击时 购物车点击。。显示隐藏

 <span class="empty" @click="empty" >清空</span>

//点击清空

	    empty() {
        	this.selectFoods.forEach((food) => {
         	food.count = 0;
        				});
      			},
      	//清空

//清空效果

背景模糊啥的就不讲了 点击事件而已，点击让fold为true就行了

渲染成功却报undefind 注意当有多个层级时 进入最近的一个比如从this.data = response  改为this.data = response.respond;