Problems using javascript regex to validate date [closed]

Answer 1

Take your original regex and just add the ^ and $ from your new one to it. Problem solved.

EDIT: Although, really, the (\.|-|\/) is a mess and should be [.\/-] instead.

EDIT 2: That said, if you make the first one ([.\/-]) then you can replace the second one with \1 and then it would require both separators to be the same.