微信小程序云开发实现增删改查功能

更新时间：2020-08-26 23:42:01 作者：startmvc

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

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：