数字转货币大写

function ChangeToBig(value)
{
      var intFen,i;
      var strArr,strCheck,strFen,strDW,strNum,strBig,strNow;

      if (trim(value) == "")   //数据为空时返回"零"
           return "零";

      if (isNaN(value))   //数据非法时提示，并返回空串
      {
           strErr = "数据"+value+"非法！"
           alert(strErr);
           return "";
      }
      strCheck = value+".";
      strArr = strCheck.split(".");
      strCheck = strArr[0];

      if (strCheck.length > 12)   //数据大于等于一万亿时提示无法处理
      {
           strErr = "数据"+value+"过大，无法处理！"
           alert(strErr);
           return "";
      }

      try
      {
           i = 0;
           strBig = "";
           intFen = value*100;          //转换为以分为单位的数值
           strFen = intFen.toString();
           strArr = strFen.split(".");
           strFen = strArr[0];
           intFen = strFen.length;      //获取长度
           strArr = strFen.split(""); //将各个数值分解到数组内

           while(intFen!=0)   //分解并转换
           {
                i = i+1;

                switch(i)              //选择单位
                {
                     case 1:strDW = "分";break;
                     case 2:strDW = "角";break;
                     case 3:strDW = "元";break;
                     case 4:strDW = "拾";break;
                     case 5:strDW = "佰";break;
                     case 6:strDW = "仟";break;
                     case 7:strDW = "万";break;
                     case 8:strDW = "拾";break;
                     case 9:strDW = "佰";break;
                     case 10:strDW = "仟";break;
                     case 11:strDW = "亿";break;
                     case 12:strDW = "拾";break;
                     case 13:strDW = "佰";break;
                     case 14:strDW = "仟";break;
                }
                switch (strArr[intFen-1])              //选择数字
                 {
                     case "1":strNum = "壹";break;
                     case "2":strNum = "贰";break;
                     case "3":strNum = "叁";break;
                     case "4":strNum = "肆";break;
                     case "5":strNum = "伍";break;
                     case "6":strNum = "陆";break;
                     case "7":strNum = "柒";break;
                     case "8":strNum = "捌";break;
                     case "9":strNum = "玖";break;
                     case "0":strNum = "零";break;
                }

                //处理特殊情况
                strNow = strBig.split("");
                //分为零时的情况
                if ((i==1)&&(strArr[intFen-1]=="0"))
                     strBig = "整";
                //角为零时的情况
                else if((i==2)&&(strArr[intFen-1]=="0"))
                {    //角分同时为零时的情况
                     if(strBig!="整")
                          strBig = "零"+strBig;
                }
                //元为零的情况
                else if((i==3)&&(strArr[intFen-1]=="0"))
                     strBig = "元"+strBig;
                //拾－仟中一位为零且其前一位（元以上）不为零的情况时补零
                else if((i<7)&&(i>3)&&(strArr[intFen-1]=="0")&&(strNow[0]!="零")&&(strNow[0]!="元"))
                     strBig = "零"+strBig;
                //拾－仟中一位为零且其前一位（元以上）也为零的情况时跨过
                else if((i<7)&&(i>3)&&(strArr[intFen-1]=="0")&&(strNow[0]=="零"))
                {} 
                 //拾－仟中一位为零且其前一位是元且为零的情况时跨过
                else if((i<7)&&(i>3)&&(strArr[intFen-1]=="0")&&(strNow[0]=="元"))
                {}
                //当万为零时必须补上万字
                else if((i==7)&&(strArr[intFen-1]=="0"))
                     strBig ="万"+strBig;
                //拾万－仟万中一位为零且其前一位（万以上）不为零的情况时补零
                else if((i<11)&&(i>7)&&(strArr[intFen-1]=="0")&&(strNow[0]!="零")&&(strNow[0]!="万"))
                     strBig = "零"+strBig;
                //拾万－仟万中一位为零且其前一位（万以上）也为零的情况时跨过
                else if((i<11)&&(i>7)&&(strArr[intFen-1]=="0")&&(strNow[0]=="万"))
                {}
                //拾万－仟万中一位为零且其前一位为万位且为零的情况时跨过
                else if((i<11)&&(i>7)&&(strArr[intFen-1]=="0")&&(strNow[0]=="零"))
                {}
                //万位为零且存在仟位和十万以上时，在万仟间补零
                else if((i<11)&&(i>8)&&(strArr[intFen-1]!="0")&&(strNow[0]=="万")&&(strNow[2]=="仟"))
                     strBig = strNum+strDW+"万零"+strBig.substring(1,strBig.length);
                //单独处理亿位
                else if(i==11)
                {
                //亿位为零且万全为零存在仟位时，去掉万补为零
                     if((strArr[intFen-1]=="0")&&(strNow[0]=="万")&&(strNow[2]=="仟"))
                          strBig ="亿"+"零"+strBig.substring(1,strBig.length);
                //亿位为零且万全为零不存在仟位时，去掉万
                     else if((strArr[intFen-1]=="0")&&(strNow[0]=="万")&&(strNow[2]!="仟"))
                          strBig ="亿"+strBig.substring(1,strBig.length);
                     //亿位不为零且万全为零存在仟位时，去掉万补为零
                     else if((strNow[0]=="万")&&(strNow[2]=="仟"))
                          strBig = strNum+strDW+"零"+strBig.substring(1,strBig.length);
                     //亿位不为零且万全为零不存在仟位时，去掉万 
                     else if((strNow[0]=="万")&&(strNow[2]!="仟"))
                          strBig = strNum+strDW+strBig.substring(1,strBig.length); 
                     //其他正常情况
                     else
                          strBig = strNum+strDW+strBig;
                }
                //拾亿－仟亿中一位为零且其前一位（亿以上）不为零的情况时补零
                else if((i<15)&&(i>11)&&(strArr[intFen-1]=="0")&&(strNow[0]!="零")&&(strNow[0]!="亿"))
                     strBig = "零"+strBig;
                //拾亿－仟亿中一位为零且其前一位（亿以上）也为零的情况时跨过
                else if((i<15)&&(i>11)&&(strArr[intFen-1]=="0")&&(strNow[0]=="亿"))
                {}
                //拾亿－仟亿中一位为零且其前一位为亿位且为零的情况时跨过
                else if((i<15)&&(i>11)&&(strArr[intFen-1]=="0")&&(strNow[0]=="零"))
                 {}
                //亿位为零且不存在仟万位和十亿以上时去掉上次写入的零
                else if((i<15)&&(i>11)&&(strArr[intFen-1]!="0")&&(strNow[0]=="零")&&(strNow[1]=="亿")&&(strNow[3]!="仟"))
                     strBig = strNum+strDW+strBig.substring(1,strBig.length);
                //亿位为零且存在仟万位和十亿以上时，在亿仟万间补零
                else if((i<15)&&(i>11)&&(strArr[intFen-1]!="0")&&(strNow[0]=="零")&&(strNow[1]=="亿")&&(strNow[3]=="仟"))
                     strBig = strNum+strDW+"亿零"+strBig.substring(2,strBig.length);
                else
                     strBig = strNum+strDW+strBig;
                     strFen = strFen.substring(0,intFen-1);
                     intFen = strFen.length;
                     strArr = strFen.split("");
                }
                return strBig;
           }catch(err){
                return "";      //若失败则返回原值
     } 
}