This regular expression checks if the provided string matches the common pattern for email addresses.
Please note that the code is based on ES2021, and as such, will not work in the global scope or scopes that are not ES2021 compatible.
^[a-zA-Z0-9._%+-]+: Matches one or more characters that can be letters (both uppercase and lowercase), digits, dots, underscores, percent signs, or plus or hyphen signs at the start of the string. @: Matches the "@" symbol. [a-zA-Z0-9.-]+: Matches one or more characters that can be letters, digits, dots, or hyphens in the domain part of the email address. .: Matches a dot. [a-zA-Z]{2,}$: Matches two or more letters at the end of the string, representing the top-level domain (TLD) of the email address.