the code in App.vue is as follows
onLaunch (options) {

// 
console.log(options.scene)
// 
if (wx.canIUse("getUpdateManager")) {
  const updateManager = wx.getUpdateManager()
  updateManager.onCheckForUpdate(function (res) {
    // 
    if (res.hasUpdate) {
      updateManager.onUpdateReady(function () {
        wx.showModal({
          title: "",
          content: "",
          success: function (res) {
            if (res.confirm) {
              //  applyUpdate 
              updateManager.applyUpdate()
            }
          }
        })
      })
      updateManager.onUpdateFailed(function () {
        // 
        wx.showModal({
          title: "~",
          content: "~~"
        })
      })
    }
  })
} else {
  // 
  wx.showModal({
    title: "",
    content: ""
  })
}

}