weixin/app.js

// app.js
App({
  onLaunch() {
    // 展示本地存储能力
    const logs = wx.getStorageSync('logs') || []
    logs.unshift(Date.now())
    wx.setStorageSync('logs', logs)
    // 登录
    let token = wx.getStorageSync('token')
    let time = wx.getStorageSync('time')//登录时间
    let Time = new Date()//当前时间
    //console.log('时间差为' + parseInt(Time - time)/1000)
    let currentTime = wx.getStorageSync('currentTime')//过期时间
    if(token != ''){
      if(parseInt(Time - time)/1000 < currentTime){
        wx.switchTab({url: 'pages/scene/scene'})
      }
      else{
        
      }
    }
    wx.login({
      success: res => {
        // 发送 res.code 到后台换取 openId, sessionKey, unionId
      }
    })
  },
  globalData: {
    userInfo: null
  },
})