Regex Tester & Validator

Validates phone numbers with an optional country code (e.g., +1 or 1-), an optional parenthesized area code, and a subscriber number of 4-10 digits separated by dashes, spaces, or dots. Also accepts plain 10-digit numbers and captures an optional extension suffix marked by #, x, ext, or ex followed by digits. Intended for international and US-style phone validation in JavaScript, though it contains a literal 's*' (likely a typo for \s*) before the extension part.