Sankame · September 22, 2019 15:31
diff --git a/KanaSample.html b/KanaSample.html
 <!DOCTYPE html>
 <html lang="ja">
 <head>
 <meta charset="UTF-8">
 </head>

 <body>
 <script>

 function Kana(){
    //The change pattern
    const HALF_2_FULL = 0;
    const FULL_2_HALF = 1;

    /**
     * Reverse keys and values of the map
     * @param {Object} targetMap
     * @param {Boolean} [areKeysNumeric=false] Are keys numeric?
     * @return {Object} The map that keys and values were reversed
     */
    const reverseMap = function(targetMap, areKeysNumeric) {
        return Object.keys(targetMap).reduceRight(function (newMap, key) {
            return (newMap[targetMap[key]] = areKeysNumeric ? parseInt(key, 10) : key, newMap);
        }, {});
    };

    /**
     * Change half-sized kana to full-sized one
     * @param {String} targetString
     * @param {Number} pattern Specify the change pattern.
     * @return {String} The changed string
     */
    const changeKana = function(targetString, pattern) {
        const originalKanaMap = {
            'ｶﾞ': 'ガ', 'ｷﾞ': 'ギ', 'ｸﾞ': 'グ', 'ｹﾞ': 'ゲ', 'ｺﾞ': 'ゴ',
            'ｻﾞ': 'ザ', 'ｼﾞ': 'ジ', 'ｽﾞ': 'ズ', 'ｾﾞ': 'ゼ', 'ｿﾞ': 'ゾ',
            'ﾀﾞ': 'ダ', 'ﾁﾞ': 'ヂ', 'ﾂﾞ': 'ヅ', 'ﾃﾞ': 'デ', 'ﾄﾞ': 'ド',
            'ﾊﾞ': 'バ', 'ﾋﾞ': 'ビ', 'ﾌﾞ': 'ブ', 'ﾍﾞ': 'ベ', 'ﾎﾞ': 'ボ',
            'ﾊﾟ': 'パ', 'ﾋﾟ': 'ピ', 'ﾌﾟ': 'プ', 'ﾍﾟ': 'ペ', 'ﾎﾟ': 'ポ',
            'ｳﾞ': 'ヴ', 'ﾜﾞ': 'ヷ', 'ｦﾞ': 'ヺ',
            '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',
            '｡': '。', '､': '、', 'ｰ': 'ー', '｢': '「', '｣': '」', '･': '・'
        };

        switch (pattern) {
            case HALF_2_FULL:
                kanaMap = originalKanaMap;
                break;
            case FULL_2_HALF:
                kanaMap = reverseMap(originalKanaMap, false);
                break;
            default:
                throw new Error("Illegal Argument Exception");
                break;
        }

        var reg = new RegExp('(' + Object.keys(kanaMap).join('|') + ')', 'g');

        return targetString
                .replace(reg, function (match) {
                    return kanaMap[match];
                });
    };

    /**
     * Change half-sized kana to full-sized one
     * @param {String} targetString
     * @return {String} The changed string
     */
    this.half2FullKana = function(targetString) {
        return changeKana(targetString, HALF_2_FULL);
    };

    /**
     * Change full-sized kana to half-sized one
     * @param {String} targetString
     * @return {String} The changed string
     */
     this.full2HalfKana = function(targetString) {
        return changeKana(targetString, FULL_2_HALF);
    };
 }

 // Test
 var kana = new Kana();

 document.write("<hr>");
 document.write("<b>Test : half2FullKana()</b><br>");
 document.write(kana.half2FullKana("ｱｲｳｴｵ､ﾀﾅｶ､ｽｽﾞｷ､ﾔﾏﾓﾄ")==="アイウエオ、タナカ、スズキ、ヤマモト");
 document.write("<br>");
 document.write(kana.half2FullKana("この文字は変わらない")==="この文字は変わらない");
 document.write("<br>");
 document.write(kana.half2FullKana("コノモジハカワラナイ。")==="コノモジハカワラナイ。");
 document.write("<br>");
 document.write(kana.half2FullKana("This characters don't change.")==="This characters don't change.");
 document.write("<br>");
 document.write(kana.half2FullKana("「ブブン的に変わるﾊﾟﾀｰﾝ」")==="「ブブン的に変わるパターン」");
 document.write("<br>");
 document.write(kana.half2FullKana("")==="");
 document.write("<br>");

 document.write("<hr>");
 document.write("<b>Test : full2HalfKana()</b><br>");
 document.write(kana.full2HalfKana("アイウエオ、タナカ、スズキ、ヤマモト")==="ｱｲｳｴｵ､ﾀﾅｶ､ｽｽﾞｷ､ﾔﾏﾓﾄ");
 document.write("<br>");
 document.write(kana.full2HalfKana("この文字は変わらない")==="この文字は変わらない");
 document.write("<br>");
 document.write(kana.full2HalfKana("ｺﾉﾓｼﾞﾊｶﾜﾗﾅｲ｡")==="ｺﾉﾓｼﾞﾊｶﾜﾗﾅｲ｡");
 document.write("<br>");
 document.write(kana.full2HalfKana("This characters don't change.")==="This characters don't change.");
 document.write("<br>");
 document.write(kana.full2HalfKana("「ブブン的に変わるﾊﾟﾀｰﾝ」")==="｢ﾌﾞﾌﾞﾝ的に変わるﾊﾟﾀｰﾝ｣");
 document.write("<br>");
 document.write(kana.full2HalfKana("")==="");
 document.write("<br>");

 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html lang="ja">
	<head>
	<meta charset="UTF-8">
	</head>

	<body>
	<script>

	function Kana(){
	//The change pattern
	const HALF_2_FULL = 0;
	const FULL_2_HALF = 1;

	/**
	* Reverse keys and values of the map
	* @param {Object} targetMap
	* @param {Boolean} [areKeysNumeric=false] Are keys numeric?
	* @return {Object} The map that keys and values were reversed
	*/
	const reverseMap = function(targetMap, areKeysNumeric) {
	return Object.keys(targetMap).reduceRight(function (newMap, key) {
	return (newMap[targetMap[key]] = areKeysNumeric ? parseInt(key, 10) : key, newMap);
	}, {});
	};

	/**
	* Change half-sized kana to full-sized one
	* @param {String} targetString
	* @param {Number} pattern Specify the change pattern.
	* @return {String} The changed string
	*/
	const changeKana = function(targetString, pattern) {
	const originalKanaMap = {
	'ｶﾞ': 'ガ', 'ｷﾞ': 'ギ', 'ｸﾞ': 'グ', 'ｹﾞ': 'ゲ', 'ｺﾞ': 'ゴ',
	'ｻﾞ': 'ザ', 'ｼﾞ': 'ジ', 'ｽﾞ': 'ズ', 'ｾﾞ': 'ゼ', 'ｿﾞ': 'ゾ',
	'ﾀﾞ': 'ダ', 'ﾁﾞ': 'ヂ', 'ﾂﾞ': 'ヅ', 'ﾃﾞ': 'デ', 'ﾄﾞ': 'ド',
	'ﾊﾞ': 'バ', 'ﾋﾞ': 'ビ', 'ﾌﾞ': 'ブ', 'ﾍﾞ': 'ベ', 'ﾎﾞ': 'ボ',
	'ﾊﾟ': 'パ', 'ﾋﾟ': 'ピ', 'ﾌﾟ': 'プ', 'ﾍﾟ': 'ペ', 'ﾎﾟ': 'ポ',
	'ｳﾞ': 'ヴ', 'ﾜﾞ': 'ヷ', 'ｦﾞ': 'ヺ',
	'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',
	'｡': '。', '､': '、', 'ｰ': 'ー', '｢': '「', '｣': '」', '･': '・'
	};

	switch (pattern) {
	case HALF_2_FULL:
	kanaMap = originalKanaMap;
	break;
	case FULL_2_HALF:
	kanaMap = reverseMap(originalKanaMap, false);
	break;
	default:
	throw new Error("Illegal Argument Exception");
	break;
	}

	var reg = new RegExp('(' + Object.keys(kanaMap).join('\|') + ')', 'g');

	return targetString
	.replace(reg, function (match) {
	return kanaMap[match];
	});
	};

	/**
	* Change half-sized kana to full-sized one
	* @param {String} targetString
	* @return {String} The changed string
	*/
	this.half2FullKana = function(targetString) {
	return changeKana(targetString, HALF_2_FULL);
	};

	/**
	* Change full-sized kana to half-sized one
	* @param {String} targetString
	* @return {String} The changed string
	*/
	this.full2HalfKana = function(targetString) {
	return changeKana(targetString, FULL_2_HALF);
	};
	}

	// Test
	var kana = new Kana();

	document.write("<hr>");
	document.write("<b>Test : half2FullKana()</b><br>");
	document.write(kana.half2FullKana("ｱｲｳｴｵ､ﾀﾅｶ､ｽｽﾞｷ､ﾔﾏﾓﾄ")==="アイウエオ、タナカ、スズキ、ヤマモト");
	document.write("<br>");
	document.write(kana.half2FullKana("この文字は変わらない")==="この文字は変わらない");
	document.write("<br>");
	document.write(kana.half2FullKana("コノモジハカワラナイ。")==="コノモジハカワラナイ。");
	document.write("<br>");
	document.write(kana.half2FullKana("This characters don't change.")==="This characters don't change.");
	document.write("<br>");
	document.write(kana.half2FullKana("「ブブン的に変わるﾊﾟﾀｰﾝ」")==="「ブブン的に変わるパターン」");
	document.write("<br>");
	document.write(kana.half2FullKana("")==="");
	document.write("<br>");

	document.write("<hr>");
	document.write("<b>Test : full2HalfKana()</b><br>");
	document.write(kana.full2HalfKana("アイウエオ、タナカ、スズキ、ヤマモト")==="ｱｲｳｴｵ､ﾀﾅｶ､ｽｽﾞｷ､ﾔﾏﾓﾄ");
	document.write("<br>");
	document.write(kana.full2HalfKana("この文字は変わらない")==="この文字は変わらない");
	document.write("<br>");
	document.write(kana.full2HalfKana("ｺﾉﾓｼﾞﾊｶﾜﾗﾅｲ｡")==="ｺﾉﾓｼﾞﾊｶﾜﾗﾅｲ｡");
	document.write("<br>");
	document.write(kana.full2HalfKana("This characters don't change.")==="This characters don't change.");
	document.write("<br>");
	document.write(kana.full2HalfKana("「ブブン的に変わるﾊﾟﾀｰﾝ」")==="｢ﾌﾞﾌﾞﾝ的に変わるﾊﾟﾀｰﾝ｣");
	document.write("<br>");
	document.write(kana.full2HalfKana("")==="");
	document.write("<br>");

	</script>
	</body>
	</html>