Question

i have this one so far used for validation a phone number in my form:

/^\s*\+?\s*([0-9]+\s*)+\s*(\((\+?[0-9]+\s*)+\))?\s*[0-9-\s]*[0-9]\s*$/

it works for like those numbers : +021 ([phone] but i need to add an extension to the end of it like this : +021 ([phone] x 123 so how can i add the char x and after that the digits?

also the spaces between the x and digits should be optional like in my code above.

any idea? thanks!

Answer 1

First off, you could replace all instances of [0-9] with the shorter \d. (for decimal digit)

Then, add this to the original regex:

(x\s*[\d]{3})?

So it would be

/^\s*\+?\s*([\d]+\s*)+\s*(\((\+?[\d]+\s*)+\))?\s*[\d-\s]*[\d]\s*(x\s*[\d]{3})?$/

Edit: Made the extension optional

Edit 2: Used \d instead of [0-9]