Small program button login ability

It will show when we click the button

Let’s first click Reject to see the returned result:

We can see that when we click Reject, we will find errorMsg in the detail 

Let's click Allow again to see:

There is a userInfo object when successful

OK, we modify our processing function

If it succeeds, we print a success message, if it fails, we fail a message!

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The above is the logic of our login!

My stomach hurts a little bit, so look back and continue!