<view class="add-item column space-around" @click="selectClick(1)"><text class="w-s-color-3 f-28">商品分类</text><view class="w-100 space-between"><!-- 第一个参数为你的单选数组，第二个参数为所需要id --><input type="text" :value="echoInputFun(categoryList,query.category_id)" placeholder="请选择" disabledplaceholder-class="phColor" class="one" /><u-icon name="arrow-right" color="#999" size="24"></u-icon></view></view><view class="add-item column space-around" @click="selectClick(2)"><text class="w-s-color-3 f-28">商品等级</text><view class="w-100 space-between"><!-- 第一个参数为你的单选数组，第二个参数为所需要id --><input type="text" :value="echoInputFun(typeList,query.type)" placeholder="请选择" disabledplaceholder-class="phColor" class="one" /><u-icon name="arrow-right" color="#999" size="24"></u-icon></view></view>

选择框 

<u-select v-model="selectShow" :default-value="defaultValue" :list="list"@confirm="confirmSelectClick"></u-select>

 select所需要的数据

selectShow: false,
list: [],
typeList: [{value: 1,label: "一级"},{value: 2,label: "二级"},{value: 3,label: "三级"}],
categoryList: [],
//记录第几个点开的select框
selectIndex: 1,
//选中的下标
defaultValue: [],

      selectClick(index) {this.selectIndex = indexif (index == 1) {this.list = this.categoryListthis.echoFun(this.query.category_id)} else {this.list = this.typeListthis.echoFun(this.query.type)}this.selectShow = true},confirmSelectClick(e) {if (this.selectIndex == 1) {this.query.category_id = e[0].value} else {this.query.type = e[0].value}},// 回显到input上面echoInputFun(list, value) {if (!value) returnlet textlist.map(item => {if (item.value == value) {text = item.label}})return text},// 回显到select表上面echoFun(value) {this.list.map((item, index) => {if (item.value == value) {this.defaultValue = [index]}})},