CortYuming https://blog.hatena.ne.jp/CortYuming/ 牌語備忘録 -pygo https://cortyuming.hateblo.jp/ Javascript カタカナ->ひらがな変換 const katakanaToHiragana = (katakana) => { return katakana.replace(/[\u30a1-\u30f6]/g, (match) => { const chr = match.charCodeAt(0) - 0x60; return String.fromCharCode(chr); }); }; console.info(katakanaToHiragana('カタカナヴ')); //-> かたかなゔ 全角英数->半角英数に変換 const zenkakuEisuToHankaku = (str) => {… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fcortyuming.hateblo.jp%2Fentry%2F2017%2F04%2F12%2F233202" title="Javascript でカタカナ-&gt;ひらがな変換とか全角英数-&gt;半角英数に変換とかのメモ - 牌語備忘録 -pygo" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2017-04-12 23:32:02 rich https://cortyuming.hateblo.jp/entry/2017/04/12/233202 1.0 100%