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JavaScriptでカタカナをひらがなに変換する(その逆も)

Last updated at Posted at 2015-09-09

よく忘れるのでメモ。

カタカナをひらがなに変換する

var str = 'アイウ';
kanaToHira(str); //あいう

function kanaToHira(str) {
    return str.replace(/[\u30a1-\u30f6]/g, function(match) {
        var chr = match.charCodeAt(0) - 0x60;
        return String.fromCharCode(chr);
    });
}

ひらがなをカタカナに変換する

var str = 'あいう';
hiraToKana(str); //アイウ

function hiraToKana(str) {
    return str.replace(/[\u3041-\u3096]/g, function(match) {
        var chr = match.charCodeAt(0) + 0x60;
        return String.fromCharCode(chr);
    });
}
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