Look at the error message first
The translated meaning is:Invalid handler for event "click": undefined
The detailed explanation is that the method you defined is not methodsexecuted in this hook function, so this error occurs. The solution is: put your wrong method back into methodsit.
Encounter this error, we find a way to go directly to the code you define onSubmitthe clicktwo key points.
This is my wrong situation.
Confused, right? onSubmitI wrote it methodsout.
Quickly put it back methodsin, and then run again, there is no error. .
