wxml部分代码 <form bindsubmit="onSubmit"> <view class="content"> <view > <view class="content-align-left"> <van-cell-group> <van-field name='pv_long' value="{{ pv_long }}" label="组件长度" placeholder="请填写组件长度" border="{{ false }}" /> </van-cell-group> </view> <view class="content-align-right"> <van-dropdown-menu> <van-dropdown-item value="{{ value1 }}" options="{{ option1 }}" bindchange="p_long" /> </van-dropdown-menu> </view> </view> <view> <view class="content-align-left"> <van-cell-group> <van-field name='pv_width' border="{{ false }}" value="{{ pv_width }}" label="组件宽度" placeholder="请填写组件宽度" /> </van-cell-group> </view> <view class="content-align-right"> <van-dropdown-menu> <van-dropdown-item value="{{ value2 }}" options="{{ option2 }}" bindchange="p_width" /> </van-dropdown-menu> </view> </view> <view> <view class="content-align-left"> <van-cell-group> <van-field name='pv_height' border="{{ false }}" value="{{ pv_height }}" label="组件高度" placeholder="请填写组件高度" /> </van-cell-group> </view> <view class="content-align-right"> <van-dropdown-menu> <van-dropdown-item value="{{ value3 }}" options="{{ option3 }}" bindchange="p_height" /> </van-dropdown-menu> </view> </view> 。 。。。 <view > <view class="content-align-left"> <van-cell-group > <van-field name='pv_glass_price' value="{{ pv_glass_price }}" label="玻璃单价" placeholder="请输入单价" bindblur='p_glass_p'/> </van-cell-group> </view> <view class="content-align-right"> <van-dropdown-menu> <van-dropdown-item value="{{ value10 }}" options="{{ option10 }}" bindchange="p_glass_price"/> </van-dropdown-menu> </view> </view>

//index.js const app = getApp() const db = wx.cloud.database() Page({ data: { list:[], tops:[], }, addCart(e) { //购物车功能 //事件传递数据的一种方法 const {item} = e.currentTarget.dataset //把商品的所有信息全部放到购物车里面，同时还要增加一个数量的显示 //先查询数据库中有没有这个数据，如果有继续加1，如果没有单独赋值为1 const i = app.globalData.carts.findIndex(v => v._id == item._id) if (i > -1) { //数量加1 app.globalData.carts[i].num += 1 } else { item.num = 1 app.globalData.carts.push(item) } }, onPullDownRefresh(){ this.page = 0 this.getList(true) }, onReachBottom(){ this.page +=1 this.getList() }, redirectToDetail(event,x){ wx.navigateTo({ url: '/pages/detail/detail?id='+event.currentTarget.id, }) console.log(event.currentTarget.id) }, toDetail(e){ const id = e.currentTarget.id wx.navigateTo({ url: '/pages/detail/detail?id='+id, }) //console.log(id) }, getList(isInit){ const PAGE= 5 wx.showLoading({ title: '加载中', }) db.collection('emall').skip(this.page * PAGE).limit(PAGE).get({ success: res =>{ console.log('xx',res.data) if (isInit){ this.setData({ list: res.data }) } else { this.setData({ list:this.data.list.concat(res.data) }) wx.stopPullDownRefresh() } wx.hideLoading() } }) }, getTop(){//首页效果轮播图 db.collection('emall').orderBy('count','desc').limit(4).get({ success:res=>{ console.log(res.data) this.setData({ tops:res.data }) } }) //取emall中的内容count的值，进行降序显示,只显示4条记录。 }, onLoad() { this.page = 0 this.getList(true) this.getTop() } })