微信小程序云开发实现增删改查功能

Page({
 data: {
  id: '',//修改用来保存_id
  iSshow: true,
  inpVal: '',
  inp2Val: '',
  inp3Val: '',
  list: []
 },
 
 onLoad: function () {
  var that = this
  that.getUserMsg()//读取信息
 },
 //获取文本框内容
 getName(e) {
  this.setData({
   inpVal: e.detail.value
  })
 },
 
 getAge(e) {
  this.setData({
   inp2Val: e.detail.value
  })
 },
 getCreated(e) {
  this.setData({
   inp3Val: e.detail.value
  })
 },
 //获取信息
 getUserMsg() {
  var that = this
  const db = wx.cloud.database()
  db.collection('datalist').get({
   success: function (res) {
    console.log(res)
    that.setData({
     list: res.data
    })
   }
  })
 },
 //添加信息
 setUserMsg() {
  var that = this
  const db = wx.cloud.database()
   db.collection('datalist').add({
    data: {
     name: that.data.inpVal,
     age: that.data.inp2Val,
     created: that.data.inp3Val
    },
    success: function (res) {
     console.log(res)
     that.setData({
      inpVal: "",
      inp2Val: "",
      inp3Val:""
     })
     console.log(that.data.inpVal + '--' + that.data.inp2Val + '--' + that.data.inp2Val)
     that.getUserMsg()
    }
   })
 },
 //删除信息
 delUserMsg(e) {
  var that = this
  const db = wx.cloud.database()
  var id = e.currentTarget.dataset.id
  db.collection('datalist').doc(id).remove({
   success: function (res) {
    console.log(res)
    that.getUserMsg()
   }
  })
 },
 //修改回显
 changeMsg(e) {
  var that = this
  var id = e.currentTarget.dataset.id
  const db = wx.cloud.database()
 
  db.collection('datalist').doc(id).get({
   success: function (res) {
    that.setData({
     inpVal: res.data.name,
     inp2Val: res.data.age,
     inp3Val:res.data.created,
     show: false,
     id: res.data._id
    })
   }
  })
 
 },
 //更新提交
 updetMsg(e) {
  var that = this
  var id = e.currentTarget.dataset.id
  const db = wx.cloud.database()
  db.collection('datalist').doc(id).update({
   data: {
    name: that.data.inpVal,
    age: that.data.inp2Val,
    created:that.data.inp3Val
   },
   success: function (res) {
    that.getUserMsg()
    that.setData({
     inpVal: '',
     inp2Val: '',
     inp3Val:'',
     show: true
    })
   }
  })
 },
})

<view class="container">
 <view class='box' style='background:#FFFFFF'>
  <label>姓名:</label>
  <input data-value='{{inpVal}}' bindinput='getName' value='{{inpVal}}'></input>
 </view>
 <view class='box' style='background:#FFFFFF;margin-top:1rpx;'>
  <label>年龄:</label>
  <input data-value='{{inpVal}}' bindinput='getAge' value='{{inp2Val}}'></input>
 </view>
  <view class='box' style='background:#FFFFFF;margin-top:10rpx;'>
 <label>手机号:</label>
  <input data-value='{{inpVal}}' bindinput='getCreated' value='{{inp3Val}}'></input>
 </view>
 <button wx:if='{{show}}' bindtap='setUserMsg'>提交</button>
 <button wx:if="{{!show}}" data-id="{{id}}" bindtap='updetMsg'>确认修改</button>
</view>
 
<view class='infoMsg'>
 <view>
  <label>姓名</label>
  <label>年龄</label>
  <label>手机号</label>
  <label>操作</label>
 </view>
 <view wx:for="{{list}}">
  <label>{{item.name}}</label>
  <label>{{item.age}}</label>
  <label>{{item.created}}</label>
  <label>
   <text data-id='{{item._id}}' bindtap='changeMsg'>修改</text>
  </label>
 </view>
 
</view>

page {
 background: #f6f6f6;
 display: flex;
 flex-direction: column;
 justify-content: flex-start;
 font-size: 30rpx;
}
.box{
 width: 90%;
 display: flex;
 background: grey
}
 
button{
 width: 90%;
 height: 40px;
 line-height: 40px;
 margin-top: 20rpx;
 background:#ffffff;
 
}
.infoMsg{
 width: 90%;
 margin: auto;
 margin-top: 20rpx;
 border: 1rpx solid #e2e2e2;
 font-size: 28rpx;
}
.infoMsg view{
 display: flex;
 border-top: 1rpx solid #e2e2e2;
}
.infoMsg view>label{
 flex: 1;
 height: 80rpx;
 line-height: 80rpx;
 text-align: center;
 overflow: hidden;
 text-overflow: ellipsis;
 white-space: nowrap;
}
.infoMsg view>label:not(:first-child){
 border-left: 1rpx solid #e2e2e2;
}
.infoMsg view>label text{
 margin-right: 10rpx;
 border: 1rpx solid #e2e2e2;
}