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全角カナを半角カナに変換するJavaScriptツール(逆も可能)
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function inverseObject(obj, keyIsNumber) { | |
return Object.keys(obj).reduceRight(function (ret, k) { | |
return (ret[obj[k]] = keyIsNumber ? parseInt(k, 10) : k, ret); | |
}, {}); | |
} | |
var henkanObj = { | |
'ア': 'ア', | |
'イ': 'イ', | |
'ウ': 'ウ', | |
'エ': 'エ', | |
'オ': 'オ', | |
'カ': 'カ', | |
'キ': 'キ', | |
'ク': 'ク', | |
'ケ': 'ケ', | |
'コ': 'コ', | |
'サ': 'サ', | |
'シ': 'シ', | |
'ス': 'ス', | |
'セ': 'セ', | |
'ソ': 'ソ', | |
'タ': 'タ', | |
'チ': 'チ', | |
'ツ': 'ツ', | |
'テ': 'テ', | |
'ト': 'ト', | |
'ナ': 'ナ', | |
'ニ': 'ニ', | |
'ヌ': 'ヌ', | |
'ネ': 'ネ', | |
'ノ': 'ノ', | |
'ハ': 'ハ', | |
'ヒ': 'ヒ', | |
'フ': 'フ', | |
'ヘ': 'ヘ', | |
'ホ': 'ホ', | |
'マ': 'マ', | |
'ミ': 'ミ', | |
'ム': 'ム', | |
'メ': 'メ', | |
'モ': 'モ', | |
'ヤ': 'ヤ', | |
'ユ': 'ユ', | |
'ヨ': 'ヨ', | |
'ラ': 'ラ', | |
'リ': 'リ', | |
'ル': 'ル', | |
'レ': 'レ', | |
'ロ': 'ロ', | |
'ワ': 'ワ', | |
'ヲ': 'ヲ', | |
'ン': 'ン', | |
'ァ': 'ァ', | |
'ィ': 'ィ', | |
'ゥ': 'ゥ', | |
'ェ': 'ェ', | |
'ォ': 'ォ', | |
'ッ': 'ッ', | |
'ャ': 'ャ', | |
'ュ': 'ュ', | |
'ョ': 'ョ', | |
'ガ': 'ガ', | |
'ギ': 'ギ', | |
'グ': 'グ', | |
'ゲ': 'ゲ', | |
'ゴ': 'ゴ', | |
'ザ': 'ザ', | |
'ジ': 'ジ', | |
'ズ': 'ズ', | |
'ゼ': 'ゼ', | |
'ゾ': 'ゾ', | |
'ダ': 'ダ', | |
'ヂ': 'ヂ', | |
'ヅ': 'ヅ', | |
'デ': 'デ', | |
'ド': 'ド', | |
'バ': 'バ', | |
'ビ': 'ビ', | |
'ブ': 'ブ', | |
'ベ': 'ベ', | |
'ボ': 'ボ', | |
'パ': 'パ', | |
'ピ': 'ピ', | |
'プ': 'プ', | |
'ペ': 'ペ', | |
'ポ': 'ポ', | |
'ヴ': 'ヴ', | |
'ヷ': 'ヷ', | |
'ヺ': 'ヺ', | |
'。': '。', | |
'、': '、', | |
'ー': 'ー', | |
'「': '「', | |
'」': '」', | |
'・': '・', | |
'゛': '゙', | |
'゜': '゚' | |
}; | |
var han2zen = function(str) { | |
var reg = new RegExp('(' + Object.keys(henkanObj).join('|') + ')', 'g'); | |
return str.replace(reg, function(match) { | |
return henkanObj[match]; | |
}); | |
}; | |
var zen2han = function(str) { | |
var k = inverseObject(henkanObj); | |
var reg = new RegExp('(' + Object.keys(k).join('|') + ')', 'g'); | |
return str.replace(reg, function(match) { | |
return k[match]; | |
}); | |
}; | |
var a = document.getElementById('a'); | |
var b = document.getElementById('b'); | |
var copy = document.getElementById('copy'); | |
var notice = document.getElementById('notice'); | |
var r = document.querySelector('[type="radio"]:first-child'); | |
var rr = document.querySelectorAll('[type="radio"]'); | |
a.addEventListener('input', function() { | |
b.value = r.checked ? han2zen(a.value) : zen2han(a.value); | |
}); | |
copy.addEventListener('click', function() { | |
b.select(); | |
document.execCommand('copy'); | |
notice.textContent = 'コピーしました。'; | |
setTimeout(function() { | |
notice.textContent = ''; | |
}, 3000); | |
}); | |
rr.forEach(function(i) { | |
i.addEventListener('click', function() { | |
b.value = r.checked ? han2zen(a.value) : zen2han(a.value); | |
}); | |
}); |
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