Javascript regex to accept only letters, spaces, and ñ

Question

I am looking for a Javascript regex to make sure the string contains only spaces, letters, and ñ — case insensitively.

I already tried: /^[A-Za-z _]*[A-Za-z][A-Za-z _]*$/ but it fails to accept ñ.

Answer 1

/^[ñA-Za-z _]*[ñA-Za-z][ñA-Za-z _]*$/

and

/^[\u00F1A-Za-z _]*[\u00F1A-Za-z][\u00F1A-Za-z _]*$/

should work.

Javascript regex supports \u0000 through \uFFFF.

Answer 2

If you simply want that caracter, insert it in the Regex, like [A-Za-zÑñ ]. Otherwise use a Unicode-knowing Regex library for Javascript like http://xregexp.com/. Sadly JS Regexes don't support Unicode compliant character classes (like \p{L} in C# regexes)