Regular Expression for Japanese characters

Question

I am doing internationalization in Struts. I want to write Javascript validation for Japanese and English users. I know regular expression for English but not for Japanese u

Answer 1

Here is a regular expression that can be used to match all English alphanumeric characters, Japanese katakana, hiragana, multibytes of alphanumerics (hankaku and zenkaku), and dashes:

/[一-龠]+|[ぁ-ゔ]+|[ァ-ヴー]+|[a-zA-Z0-9]+|[ａ-ｚＡ-Ｚ０-９]+|[々〆〤]+/u

You can edit it to fit your needs, but notice the "u" flag at the end.

I hope this helps!