Variable DOMAIN_REGEX`Const`

DOMAIN_REGEX: RegExp = ...

Regex pattern for validating domain URLs in a flexible way Accepts:

Domain names: example.com, sub.example.com
With protocol: https://example.com, http://example.com
With port: example.com:8080
With path: example.com/path
Localhost and IPs: localhost, 192.168.1.1