Registration Validation

This is screenshot from software.

Written a registration form with 40320 combinations.

An interesting challenge is defining errors (how many errors can occur in this form?) and inform the user exactly about the specific error in the field.

Also here occured error with CORS, when shooting at the endpoint responsible for registering.

in addition, everything in real time, when selecting a checkbox or entering one character in the field. (thanks to handleOnChange and handleOnClick functions)

Conditioning the filled field to true / false, you can specify which fields are or are not selected and display the appropriate message via redux or add / subtract a class.