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Regex to test for presence of Japanese characters
// REFERENCE UNICODE TABLES:
// http://www.rikai.com/library/kanjitables/kanji_codes.unicode.shtml
// http://www.tamasoft.co.jp/en/general-info/unicode.html
//
// TEST EDITOR:
// http://www.gethifi.com/tools/regex
//
// UNICODE RANGE : DESCRIPTION
//
// 3000-303F : punctuation
// 3040-309F : hiragana
// 30A0-30FF : katakana
// FF00-FFEF : Full-width roman + half-width katakana
// 4E00-9FAF : Common and uncommon kanji
//
// Non-Japanese punctuation/formatting characters commonly used in Japanese text
// 2605-2606 : Stars
// 2190-2195 : Arrows
// u203B : Weird asterisk thing
var regex = /[\u3000-\u303F]|[\u3040-\u309F]|[\u30A0-\u30FF]|[\uFF00-\uFFEF]|[\u4E00-\u9FAF]|[\u2605-\u2606]|[\u2190-\u2195]|\u203B/g;
var input = "input string";
if(regex.test(input)) {
console.log("Japanese characters found")
}
else {
console.log("No Japanese characters");
}
@ryanmcgrath
Owner

This is a kickass bit of code right here.

@pinopino

it works! thank you for your amazing work!

@swathiPaipalle

Thanks! It helps me

@Minsik-Ahn

Thanks~!! It works

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