In most regex dialects there are a set of convenient character summaries you can use for this kind of thing – these are good ones to remember:

\w – Matches any word character.

\W – Matches any nonword character.

\s – Matches any white-space character.

\S – Matches anything but white-space characters.

\d – Matches any digit.

\D – Matches anything except digits.

A search for “Regex Cheatsheets” should reward you with a whole lot of useful summaries.