validDomainChars top-level constant

String const validDomainChars

validDomainChars is a constant RegExp pattern string intended to match any character that is not included in the invalidDomainChars string, representing valid characters allowed in a domain name.

This constant can be used to create a RegExp object to check whether a given string or part of a string conforms to the character restrictions of domain names.

Implementation

const validDomainChars = '[^$invalidDomainChars]';