wx.cloud.init({env:envname})

 const db = wx.cloud.database()
 const test = db.collection('test')

 wx.cloud.init({env:'minicloud'})
 const db = wx.cloud.database()
 const test = db.collection('test')

 test.add({
 // data 字段表示需新增的 JSON 數據
 data: {

 name: "Bill",
 age:30 
 },
 success: function (res) { 
 // 

{
 "cloud": true,
 "pages": [
 "pages/main/main",
 "pages/userConsole/userConsole",
 "pages/storageConsole/storageConsole",
 "pages/databaseGuide/databaseGuide",
 "pages/addFunction/addFunction",
 "pages/deployFunctions/deployFunctions",
 "pages/chooseLib/chooseLib"
 ],
 "window": {
 "backgroundColor": "#F6F6F6",
 "backgroundTextStyle": "light",
 "navigationBarBackgroundColor": "#F6F6F6",
 "navigationBarTitleText": "云開發 QuickStart",
 "navigationBarTextStyle": "black"
 }
}

<view>
 <input style='margin-top: 40rpx;' placeholder="請輸入姓名" value="{{name}}" bindinput="bindKeyInputName" />
 <input style='margin-top: 40rpx;' placeholder="請輸入年齡" value="{{age}}" bindinput="bindKeyInputAge" />
 <button style='margin-top: 40rpx;' bindtap='insertData'>插入數據</button>
 <input style='margin-top: 40rpx;' placeholder="請輸入記錄ID" value="{{recordId}}" bindinput="bindKeyInputId" />

 <button style='margin-top: 40rpx;' bindtap='queryData'>查詢數據</button>

 <text style='margin-top: 40rpx;'>
 姓名：{{nameResult}}
 </text>
 <text style='margin-top: 80rpx;'>
 年齡：{{ageResult}}
 </text>
</view>

 onGetOpenid: function() {
 // 調用云函數
 wx.cloud.callFunction({
 name: 'login',
 data: {},
 success: res => {
 console.log('[云函數] [login] user openid: ', res.result.openid)
 app.globalData.openid = res.result.openid
 wx.navigateTo({
 url: '../userConsole/userConsole',
 })
 },
 fail: err => {
 console.error('[云函數] [login] 調用失敗', err)
 wx.navigateTo({
 url: '../deployFunctions/deployFunctions',
 })
 }
 })
 }

db.collection(集合名）.doc(記錄ID）.get(
 {
 // 查詢到數據后觸發，res參數值包含的查詢到 數據
 success:function(res) {
 },
 // 未查詢到數據觸發
 fail:function(res) {
 }
})

// miniprogram/pages/main/main.js
const app = getApp()
Page({

 /**
 * 頁面的初始數據
 */
 db:undefined,
 test:undefined,
 data: {
 name:'',
 age:'',
 recordId:'',
 nameResult:'',
 ageResult:'' 
 },

 /**
 * 生命周期函數--監聽頁面加載
 */
 onLoad: function (options) {
 var that = this
 // 調用login云函數獲取openid
 wx.cloud.callFunction({
 name: 'login',
 data: {},
 success: res => {
 console.log('[云函數] [login] user openid: ', res.result.openid)
 app.globalData.openid = res.result.openid
 wx.cloud.init({ env: 'minicloud' })
 that.db = wx.cloud.database()
 that.test = that.db.collection('test')
 },
 fail: err => {
 console.error('[云函數] [login] 調用失敗', err)
 wx.navigateTo({
 url: '../deployFunctions/deployFunctions',
 })
 }
 })

 },
 // 單擊“插入數據”按鈕調用該函數
 insertData:function() {
 var that = this
 try
 {
 // 將年齡轉換為整數類型值
 var age = parseInt(that.data.age)
 // 如果輸入的年齡不是數字，會顯示錯誤對話框，并退出該函數
 if(isNaN(age))
 {
 // 顯示錯誤對話框
 wx.showModal({
 title: '錯誤',
 content: '請輸入正確的年齡',
 showCancel: false
 })
 return
 } 
 // 向test數據集添加記錄
 this.test.add({
 // data 字段表示需新增的 JSON 數據
 data: {
 name: that.data.name,
 age: age
 },
 // 數據插入成功，調用該函數
 success: function (res) {
 console.log(res)
 wx.showModal({
 title: '成功',
 content: '成功插入記錄',
 showCancel:false
 })
 that.setData({
 name:'',
 age:''
 })
 }
 })
 }
 catch(e)
 {
 wx.showModal({
 title: '錯誤',
 content: e.message,
 showCancel: false
 })

 }
 },
 // 單擊“查詢數據”按鈕執行該函數
 queryData:function() {
 var that = this
 // 根據記錄ID搜索數據集 
 this.db.collection('test').doc(this.data.recordId).get({
 // 找到記錄集調用
 success: function (res) { 
 // 將查詢結果顯示在頁面上 
 that.setData({
 nameResult:res.data.name,
 ageResult:res.data.age
 })

 },
 // 未查到數據時調用
 fail:function(res) {
 wx.showModal({
 title: '錯誤',
 content: '沒有找到記錄',
 showCancel: false
 })
 }
 })

 },
 // 下面的函數用于當更新input組件中的值時同時更新對應變量的值
 bindKeyInputName: function (e) {
 this.setData({
 name: e.detail.value
 })
 },
 bindKeyInputAge:function(e) {
 this.setData({
 age: e.detail.value
 })
 },
 bindKeyInputId:function(e) {
 this.setData({
 recordId:e.detail.value
 })
 },

})