Regular Expression: Any character that is NOT a letter or number

Question

I\'m trying to figure out the regular expression that will match any character that is not a letter or a number. So characters such as (,,@,£,() etc ...

Once found I

Answer 1

This regular expression matches anything that isn't a letter, digit, or an underscore (_) character.

\W

For example in JavaScript:

"(,,@,£,() asdf 345345".replace(/\W/g, ' '); // Output: "          asdf 345345"