Allow - (dash) in regular expression

Question

I have the following regular expression but I want the text box to allow the dash character

^[0-9a-zA-Z \\/_?:.,\\s]+$

Anyone know how I ca

Answer 1

Simple answer, user \- in character class.

^[0-9a-zA-Z\- \/_?:.,\s]+$

Answer 2

Escape it with \ like:

^[\-0-9a-zA-Z \/_?:.,\s]+$

Answer 3

The dash needs to be the first/last character in the character class in order to be used literally:

^[-0-9a-zA-Z \/_?:.,\s]+$

^[0-9a-zA-Z \/_?:.,\s-]+$

You could also escape it, if not the first/last:

^[0-9a-zA-Z\- \/_?:.,\s]+$