UI原型图：


 

页面思路：
在商品信息最小item外面有一个包裹所有item的标签，控制这个标签的高度来实现展开收起功能
 

			<!-- 药品信息 --><view class="drugs" v-if="inquiryInfoSubmitBtn"><view class="medical"><view class="style-height" :style="styleHeight"><view class="medical-item" v-for="item in cartList" :key="item.drugsId"><view class="item-left"><view class="pos-re"><u-image :src="formatImgUrl(item.drugsImg)" height="80" width="80" border-radius="8" class="item-img "><u-loading slot="loading"></u-loading><view slot="error" class="font20">加载失败</view></u-image><view class="pos-ab drugs-icon drug-chufang" v-if="item.preType == 0">处方药</view><view class="pos-ab drugs-icon drug-otc" v-if="item.preType == 1">OTC</view></view><view class="item-text"><view class="item-name text-ellipsis"><text class="tag-insurance mr-8" v-if="item.nationalDrugCode && isInsurance">医保</text>{{ item.drugsName }}</view><view class="item-specification text-ellipsis">规格：{{ item.drugsSpecification }}</view></view></view><view class="item-right"><view class="item-price">¥{{ item.sellingPrice | priceFormat }}</view><view class="item-count">x{{ item.quantity }}</view></view></view></view><view class="spread" @click="clickText" v-if="cartList.length > 1">{{spreadText}}(共{{cartList.length}}个)<u-icon :name="iconName" color="#748099" size="24"></u-icon></view><u-gap height="1" bg-color="#D3DDF0" class="gap"></u-gap><view class="total"><view class="total-text">共计</view><view class="total-price">¥{{ totalPrice | priceFormat }}</view></view></view></view>

data(){return{iconName: 'arrow-down',spreadText: '展开',styleHeight: {height: '100rpx'},}
}

		clickText() {console.log('this.spreadText',this.spreadText)if(this.spreadText == '展开') {this.spreadText = '收起';this.iconName = 'arrow-up';this.styleHeight.height = 'auto';}else{this.spreadText = '展开';this.iconName = 'arrow-down';this.styleHeight.height = '100rpx';}},