Question

I am using livevalidation script

http://livevalidation.com

I need to check whether the text contains special characters except _ (underscore) – (hyphen) . (dot) and Space
Presence of special characters except those characters will not validated
What Cain I do for this?

Answer 1

I think you are stuck with regular expression.

The regular expression is for your requirement is /^[a-z0-9_ .-]*$/i

var myField = new LiveValidation('myField', { validMessage: "I am valid!" });
myField.add(Validate.Format, { pattern: /^[a-z0-9_ .-]*$/i });