本文实例为大家分享了微信小程序云开发实现增删改查的具体代码，供大家参考，具体内容如下

首先按照微信小程序官方提示创建一个快速云开发小程序

大家可以点击此处下载源代码

实现效果如下：

在miniprogram->index的下修改下面三个文件

index.js如下：

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 }) } }) },})

index.wxml如下：

<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>

index.wxss如下：

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;}

数据集合如下图：

大家可以点击此处下载源代码 ，有问题可以评论交流！

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