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any suggestion on best practices is welcomed

Any suggestion is welcomed, especially for best practices!

recommendation on best practices?

Any best practice I have missed out?

Any suggestion is welcomed : D

Any suggestion is appreciated. Besides, is it okay if I use local storage for passing information to another webpage? How would a web dev do in a real life case?

any suggestion is welcomed

I was wondering if there is a simple way of auto-formatting the card number input from users without using frameworks (i.e. auto-spacing 4-digit numbers)

Any comment is appreciated (especially for JS)

Any comment is appreciated!

any feedback is welcome and appreciated. THanks!!

Best practices that I missed out Possible improvements