Wechat applet adds data to the database

This is a getUserProfile The code for the event

```javascriptgetUserProfile(e) { wx.getUserProfile({ desc: ' Get your nickname 、 Head portrait 、 Region and gender ', //  Declare the purpose of obtaining the user's personal information , The follow-up will be shown in the pop-up window , Please fill in carefully  success: (res) => { // console.log(res); this.setData({ userInfo: res.userInfo, hasUserInfo: true, }) }, }) 

Here is to add the obtained data to the database , But if you write like this ,userInfo I can't seem to get it

```javascriptlet userInfo=this.userInfo;    if(!this.data.hasUserInfo && userInfo){      db.collection('users').add({        data:{          userPic:userInfo.avatarUrl,          nickname:userInfo.nickName,

This is a getUserProfile The printed value , In this case, I want to get userInfo How to write the path , I write like this （let userInfo=this.userInfo;） It's wrong.