Design comparison
Solution retrospective
the test case for form validation
- if input field is blank
- if month number value is larger than 12
- if year value is smaller than current year as for formatting (card number,cvc,month,etc cannot be alphabet), i use @input function to format the value using regex, so i don't think it's necessary to display wrong format error, as user will not be able to type wrong format anyway
any comments are very welcomed!
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