我自己寫的js 全形半形互相轉化函數

 

function tobanjiao(str) { var result="";for (var i = 0; i < str.length; i++){if (str.charCodeAt(i)==12288){result+= String.fromCharCode(str.charCodeAt(i)-12256);continue;}if (str.charCodeAt(i)>65280 && str.charCodeAt(i)<65375)result+= String.fromCharCode(str.charCodeAt(i)-65248);else result+= String.fromCharCode(str.charCodeAt(i));}           return result;     }               function toquanjiao(mystr) {            var result="";        for (var i=0; i < mystr.length ;i++)         {   if(mystr.charCodeAt(i)==32)   {result+= String.fromCharCode(str.charCodeAt(i)+12256);continue;   }     if ( mystr.charCodeAt(i)<127 )      result+= String.fromCharCode(mystr.charCodeAt(i)+65248);    }          return result;      }