//app.js
App({onLaunch: function () {// 展示本地存储能力var logs = wx.getStorageSync('logs') || []logs.unshift(Date.now())wx.setStorageSync('logs', logs)// 登录
    wx.login({success: res => {// 发送 res.code 到后台换取 openId, sessionKey, unionId
      }})// 获取用户信息
    wx.getSetting({success: res => {if (res.authSetting['scope.userInfo']) {// 已经授权，可以直接调用 getUserInfo 获取头像昵称，不会弹框
          wx.getUserInfo({success: res => {// 可以将 res 发送给后台解码出 unionIdthis.globalData.userInfo = res.userInfo// 由于 getUserInfo 是网络请求，可能会在 Page.onLoad 之后才返回// 所以此处加入 callback 以防止这种情况if (this.userInfoReadyCallback) {this.userInfoReadyCallback(res)}}})}}})},globalData: {userInfo: null}
})

{"pages":["pages/index/index","pages/logs/logs"],"window":{"backgroundTextStyle":"light","navigationBarBackgroundColor": "#fff","navigationBarTitleText": "WeChat","navigationBarTextStyle":"black"}
}

/**app.wxss**/
.container {height: 100%;display: flex;flex-direction: column;align-items: center;justify-content: space-between;padding: 200rpx 0;box-sizing: border-box;
} 

{"description": "项目配置文件。","packOptions": {"ignore": []},"setting": {"urlCheck": true,"es6": true,"postcss": true,"minified": true,"newFeature": true},"compileType": "miniprogram","libVersion": "2.2.3","appid": "wx7d22ab7088f2db6a","projectname": "appApp","isGameTourist": false,"condition": {"search": {"current": -1,"list": []},"conversation": {"current": -1,"list": []},"game": {"currentL": -1,"list": []},"miniprogram": {"current": -1,"list": []}}
}

const formatTime = date => {const year = date.getFullYear()const month = date.getMonth() + 1const day = date.getDate()const hour = date.getHours()const minute = date.getMinutes()const second = date.getSeconds()return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}const formatNumber = n => {n = n.toString()return n[1] ? n : '0' + n
}module.exports = {formatTime: formatTime
}

//index.js
//获取应用实例
const app = getApp()Page({data: {motto: 'Hello World',userInfo: {},hasUserInfo: false,canIUse: wx.canIUse('button.open-type.getUserInfo')},//事件处理函数bindViewTap: function() {wx.navigateTo({url: '../logs/logs'})},onLoad: function () {if (app.globalData.userInfo) {this.setData({userInfo: app.globalData.userInfo,hasUserInfo: true})} else if (this.data.canIUse){// 由于 getUserInfo 是网络请求，可能会在 Page.onLoad 之后才返回// 所以此处加入 callback 以防止这种情况app.userInfoReadyCallback = res => {this.setData({userInfo: res.userInfo,hasUserInfo: true})}} else {// 在没有 open-type=getUserInfo 版本的兼容处理
      wx.getUserInfo({success: res => {app.globalData.userInfo = res.userInfothis.setData({userInfo: res.userInfo,hasUserInfo: true})}})}},getUserInfo: function(e) {app.globalData.userInfo = e.detail.userInfothis.setData({userInfo: e.detail.userInfo,hasUserInfo: true})}
})

<!--index.wxml-->
<view class="container"><view class="userinfo"><button wx:if="{{!hasUserInfo && canIUse}}" open-type="getUserInfo" bindgetuserinfo="getUserInfo"> 获取头像昵称 </button><block wx:else><image bindtap="bindViewTap" class="userinfo-avatar" src="{{userInfo.avatarUrl}}" background-size="cover"></image><text class="userinfo-nickname">{{userInfo.nickName}}</text></block></view><view class="usermotto"><text class="user-motto">{{motto}}</text></view>
</view>

/**index.wxss**/
.userinfo {display: flex;flex-direction: column;align-items: center;
}.userinfo-avatar {width: 128rpx;height: 128rpx;margin: 20rpx;border-radius: 50%;
}.userinfo-nickname {color: #aaa;
}.usermotto {margin-top: 200px;
}