JS Japanese full Half-width conversion

The customer's requirement is to enter half-width characters or Japanese kana, and the filtered results show all the results in half-width and full-width form that contain the character, and the same result is the input full-width. Here you need to convert all the characters you have entered into half-width and full-width, then match the results.
After searching the Internet, only the full-width conversion of the characters was found, and the Japanese almost didn't, and at last GitHub came to what they wanted.
GitHub Address: Https://github.com/shogo4405/KanaXS

The full half angle of the character is converted as follows: full-width turning half angle

function ToCDB(str) {       var tmp = "";       for (var i = 0; i < str.length; i++) {           if (str.charCodeAt(i) > 65248 && str.charCodeAt(i) < 65375) {               tmp += String.fromCharCode(str.charCodeAt(i) - 65248);           }           else {               tmp += String.fromCharCode(str.charCodeAt(i));           }       }       return tmp}

Half angle turn full angle

function ToDBC(txtstring) {        var tmp = "";        for (var i = 0; i < txtstring.length; i++) {            if (txtstring.charCodeAt(i) == 32) {                tmp = tmp + String.fromCharCode(12288);            }            if (txtstring.charCodeAt(i) < 127) {                tmp = tmp + String.fromCharCode(txtstring.charCodeAt(i) + 65248);            }        }    if(isEmpty(tmp)){        return txtstring;    }    return tmp;}

In the full-width turning half- angle method, the input full angle is converted to half-width, and the input half-angle is returned or half-width.
half-angle to full -width method, the input half-angle conversion to full-width, input full-width, return is empty, not conducive to the subsequent operation, so if the result is empty, then the input character is returned, the input full-width, return or full-width.

Japanese kana half angle turn full angle

On GitHub, the full-width method does not contain small characters, such as ぁ、ぃ、ぅ、ぇ、ぉ、っ、ゃ、ゅ、ょ , so I modified in the JS file, adding the Unicode code of these small characters in contrast. The complete code is as follows:

/** * Half angle のカタカナを full angle のカタカナに slew for します. * @example * "?????". Tozenkanacase (); アイウエオ* @return {String} */string.prototype.tozenkanacase = function () {var i, F, c, a = [], M = String.prototype.to    zenkanacase.mapping;        for (i = 0, F = this.length;i < F; i++) {c = this.charcodeat (i);    A.push (M[c] | | c);    }; return String.fromCharCode.apply (null, a);}; String.prototype.toZenkanaCase.MAPPING = {0xff67:0x30a1, 0xff68:0x30a3, 0XFF69:0X30A5, 0xff6a        : 0x30a7, 0xff6b:0x30a9, 0XFF70:0X30FC, 0XFF71:0X30A2, 0XFF72:0X30A4, 0XFF73:0X30A6, 0XFF74:0X30A8, 0XFF75:0X30AA, 0xff76:0x30ab, 0XFF77:0X30AD, 0XFF78:0X30AF, 0xff79:0        X30B1, 0xff7a:0x30b3, 0xff7b:0x30b5, 0xff7c:0x30b7, 0xff7d:0x30b9, 0XFF7E:0X30BB, 0XFF7F:0X30BD, 0XFF80:0X30BF, 0XFF81:0X30C1, 0xff82:0x30c4, 0xff83:0x30c6, 0xff84:0x3 0C8, 0xff85:0X30CA, 0XFF86:0X30CB, 0xff87:0x30cc, 0XFF88:0X30CD, 0XFF89:0X30CE, 0XFF8A:0X30CF, 0XFF8B:0X30D2, 0xff8c:0x30d5, 0xff8d:0x30d8, 0xff8e:0x30db, 0XFF8F:0X30DE, 0xff90:0x3        0DF, 0xff91:0x30e0, 0xff92:0x30e1, 0xff93:0x30e2, 0xff94:0x30e4, 0xff95:0x30e6, 0xff96:0x30e8, 0xff97:0x30e9, 0xff98:0x30ea, 0xff99:0x30eb, 0xff9a:0x30ec, 0xff9b:0x30e D, 0xff9c:0x30ef, 0xff9d:0x30f3, 0xff9e:0x309b, 0xff9f:0x309c, 0XFF66:0X30F2, 65 383:12,449,//ァ65384:12451,//ィ65385:12453,//ゥ65386:12455,//ェ65387:12457,//ォ6539 1:12,483,//ッ65388:12515,//ャ65389:12517,//ュ65390:12519//ョ};

JS Japanese full half-width conversion