Regex Tester & Validator

This regular expression matches sequences of alphabetic characters (and a few unintended special characters due to the `[A-z]` range) separated by whitespace. It is intended to match full names consisting of one or more parts, such as 'John Doe' or 'Jane Mary Smith'. Because it uses the range A-z, it accidentally allows characters like square brackets, backslashes, and underscores. It is typically used in JavaScript for simple form validations where a person's name is expected.