JavaScript surname validation with regex

Question

I need to write validation for surname with polish letters.

I wrote something like this:

"^[A-Z][\u0000-\u007F\u0100-\u017F]+([ |-][A-Z][\u0000-\u007F\u0100-\u017F])*$"

where:

• [A-Z]: the first letter must be capital
• [\u0000-\u007F\u0100-\u017F]+: other letters
• ([ |-][A-Z][\u0000-\u007F\u0100-\u017F])*: space for optional second part of surname with a "-" or space

Everything is fine, but when I type for example:

"Matt...;'"

I still have a match. How can I "cut" symbols like dots . and quotation marks?

Answer 1

It seems you may use

^[A-PR-UWY-ZĄĆĘŁŃÓŚŹŻ][a-pr-uwy-ząćęłńóśźż]+(?:\s[A-PR-UWY-ZĄĆĘŁŃÓŚŹŻ][a-pr-uwy-ząćęłńóśźż]+)?\s[A-PR-UWY-ZĄĆĘŁŃÓŚŹŻ][a-pr-uwy-ząćęłńóśźż]+(?:-[A-PR-UWY-ZĄĆĘŁŃÓŚŹŻ][a-pr-uwy-ząćęłńóśźż]+)?$

See the regex demo.

It is based on all Polish alphabet letters regex (that excludes V/v, Q/q and X/x from the ASCII letter range) and will match names that:

• Matches a first name
• Then may match an optional second first name (after a whitespace)
• A surname
• An optional surname part after a hyphen.

Details

• ^ - start of string
• [A-PR-UWY-ZĄĆĘŁŃÓŚŹŻ][a-pr-uwy-ząćęłńóśźż]+ - an uppercase Polish letter and 1+ lowercase ones
• (?:\s[A-PR-UWY-ZĄĆĘŁŃÓŚŹŻ][a-pr-uwy-ząćęłńóśźż]+)? - 1 or 0 occurrences of a whitespace and then an uppercase Polish letter and 1+ lowercase ones
• \s - a single whitespace char
• [A-PR-UWY-ZĄĆĘŁŃÓŚŹŻ][a-pr-uwy-ząćęłńóśźż]+ - an uppercase Polish letter and 1+ lowercase ones
• (?:-[A-PR-UWY-ZĄĆĘŁŃÓŚŹŻ][a-pr-uwy-ząćęłńóśźż]+)? - 1 or 0 occurrences of a hyphen and then an uppercase Polish letter and 1+ lowercase ones
• $ - end of string.

If you plan to support x, q and v in the names, replace a-pr-uwy-z with a-z and A-PR-UWY-Z with A-Z.