Regex Phone Number - Step by Step

This is the basics of a phone number regex to just help you understand how to write regex in general VIDEO CORRECTION!! The end of the regex needs to be a $ not a ? ^\+?\d.\s? // +1 or +44 \(?\d{3}\)? // first part [-.\s]? // possible spacing / sep \d{3} // 2nd part [-.\s]? // possible spacing / sep \d{4}? // 3rd part