Regular Expression for Phone Number

Question

I need a Javascript RegEx through which I can validate phone number. RegEx should handle following criteria

1. It should only consist of numbers ( ) + and -

Answer 1

Try this:

function valid_phone_number(ph) {
  var regex = /^(?!([^-]*-){5})(\+\d+)?\s*(\(\d+\))?[- \d]+$/gi;
  return regex.test(ph);
}

I'm new to regular expressions, so please be nice. :-)