如何在正则表达式中匹配非ASCII（德语，西班牙语等）字母？

Question

I was unable to find or create a regex which match only letters,spaces, accented letters and spanish and german letters.

I'm using this for now:

var reg = new RegExp("^[a-z _]*$");

I've tried:

^[:alpha: _]*$   
^[a-zA-Z0-9äöüÄÖÜ]*$  
^[-\p{L}]*$   

Any idea? Or the regex supported by javascript engines are limited?

Answer 1

The 2nd to last case looks like it should work, but is missing a " " and "_":

/^[a-zA-Z0-9äöüÄÖÜ]*$/.test("aäöüÄÖÜz") => true in FF 3.6 and IE8

/^[a-zA-Z0-9äöüÄÖÜ]*$/.test("é") => false in FF 3.6 and IE8

I'm am unable to find the other constructs in the ECMAScript specification .

Happy coding.

Edit Also check the page encoding and make sure it is "unicode" (UTF-8 likely). If this can't be ensured, then use the \\uXXXX escape sequences in the regular expression (using the escapes can be done anyway and may help with source code editing/control).

Answer 2

I'm parsing a name input field, and this seems to be working for both German and French:

^[a-zA-Z\\-ÀàÂâÆæÇçÈèÉéÊêËëÎîÏïÔôŒœÙùÛûÜü]*$

Some folks have names like 'Rölf-Dieter', and this lets them through, while checking for numbers. A little extreme, but it works!