javascrpt实现数字金额转换为大写金额

 function numToChinese(Num) {
   if(Num == null || Num == undefined || Num =="")
   {
      return "零";
   }
   if (isNaN(Num)) {

      return "请输入正确的金额！";
   }
   part = String(Num).split(".");
   newchar = "";
   for (i = part[0].length - 1; i >= 0; i--) {
      if (part[0].length > 10) {
         return "";
      }
      tmpnewchar = ""
      perchar = part[0].charAt(i);
      switch (perchar) {
         case "0":
            tmpnewchar = "零" + tmpnewchar;
            break;
         case "1":
            tmpnewchar = "壹" + tmpnewchar;
            break;
         case "2":
            tmpnewchar = "贰" + tmpnewchar;
            break;
         case "3":
            tmpnewchar = "叁" + tmpnewchar;
            break;
         case "4":
            tmpnewchar = "肆" + tmpnewchar;
            break;
         case "5":
            tmpnewchar = "伍" + tmpnewchar;
            break;
         case "6":
            tmpnewchar = "陆" + tmpnewchar;
            break;
         case "7":
            tmpnewchar = "柒" + tmpnewchar;
            break;
         case "8":
            tmpnewchar = "捌" + tmpnewchar;
            break;
         case "9":
            tmpnewchar = "玖" + tmpnewchar;
            break;
      }
      switch (part[0].length - i - 1) {
         case 0:
            tmpnewchar = tmpnewchar + "元";
            break;
         case 1:
            if (perchar != 0) tmpnewchar = tmpnewchar + "拾";
            break;
         case 2:
            if (perchar != 0) tmpnewchar = tmpnewchar + "佰";
            break;
         case 3:
            if (perchar != 0) tmpnewchar = tmpnewchar + "仟";
            break;
         case 4:
            tmpnewchar = tmpnewchar + "万";
            break;
         case 5:
            if (perchar != 0) tmpnewchar = tmpnewchar + "拾";
            break;
         case 6:
            if (perchar != 0) tmpnewchar = tmpnewchar + "佰";
            break;
         case 7:
            if (perchar != 0) tmpnewchar = tmpnewchar + "仟";
            break;
         case 8:
            tmpnewchar = tmpnewchar + "亿";
            break;
         case 9:
            tmpnewchar = tmpnewchar + "拾";
            break;
      }
      newchar = tmpnewchar + newchar;
   }
   if ((Num+"").indexOf(".") != -1) {
      if (part[1].length > 2) {
         part[1] = part[1].substr(0, 2)
      }
      for (i = 0; i < part[1].length; i++) {
         tmpnewchar = ""
         perchar = part[1].charAt(i)
         switch (perchar) {
            case "0":
               tmpnewchar = "零" + tmpnewchar;
               break;
            case "1":
               tmpnewchar = "壹" + tmpnewchar;
               break;
            case "2":
               tmpnewchar = "贰" + tmpnewchar;
               break;
            case "3":
               tmpnewchar = "叁" + tmpnewchar;
               break;
            case "4":
               tmpnewchar = "肆" + tmpnewchar;
               break;
            case "5":
               tmpnewchar = "伍" + tmpnewchar;
               break;
            case "6":
               tmpnewchar = "陆" + tmpnewchar;
               break;
            case "7":
               tmpnewchar = "柒" + tmpnewchar;
               break;
            case "8":
               tmpnewchar = "捌" + tmpnewchar;
               break;
            case "9":
               tmpnewchar = "玖" + tmpnewchar;
               break;
         }
         if (i == 0) tmpnewchar = tmpnewchar + "角";
         if (i == 1) tmpnewchar = tmpnewchar + "分";
         newchar = newchar + tmpnewchar;
      }
   }
   while (newchar.search("零零") != -1)
      newchar = newchar.replace("零零", "零");
   newchar = newchar.replace("零亿", "亿");
   newchar = newchar.replace("亿万", "亿");
   newchar = newchar.replace("零万", "万");
   newchar = newchar.replace("零元", "元");
   newchar = newchar.replace("零角", "");
   newchar = newchar.replace("零分", "");
   if (newchar.charAt(newchar.length - 1) == "元" || newchar.charAt(newchar.length - 1) == "角")
      newchar = newchar + "整"

   return newchar;
}

复制以上代码 调用  numToChinese 方法即可