人民幣數字轉換爲大寫

/**
         * 將阿拉伯數字金額轉換成中文金額大寫
         */
        function numToCh(Num){
            for(var i=Num.length-1;i>=0;i--){
                Num = Num.replace(",","")//替換Num中的“,”
                Num = Num.replace(" ","")//替換Num中的空格
            }
            Num = Num.replace("￥","")//替換掉可能出現的￥字符
            if(isNaN(Num)){
                //驗證輸入的字符是否爲數字
                alert("請檢查總租金小寫金額是否正確！");
                return;
            }
            var part = String(Num).split(".");
            var newChar = "";
            //小數點前進行轉化
           for(i=part[0].length-1;i>=0;i--){
                if(part[0].length > 10){ alert("抱歉！位數過大,無法計算自動生成。");return "";}//若數量超過拾億單位，提示
                var tmpNewChar = ""
                var perchar = part[0].charAt(i);
                var moneyArray = ['零','壹','貳','叄','肆','伍','陸','柒','捌','玖'];
                tmpNewChar=moneyArray[perchar] + tmpNewChar;
                var partyIndex = part[0].length-i-1;
                var moneyUnit  = ['元','拾','佰','仟','萬','拾','佰','仟','億','拾'];
                if(partyIndex == 0)tmpNewChar = tmpNewChar +"元" ;
                else if(partyIndex >0){
                    if(perchar>0 || partyIndex%4 == 0){
                        tmpNewChar= tmpNewChar +moneyUnit[partyIndex];
                    }
                }
                newChar = tmpNewChar + newChar;
            }
            //小數點之後進行轉化
            if(Num.indexOf(".")!=-1){
                if(part[1].length > 2){
                    alert("小數點之後只能保留兩位,系統將自動截段");
                    part[1] = part[1].substr(0,2)
                }
                for(i=0;i<part[1].length;i++){
                    tmpNewChar = ""
                    perchar = part[1].charAt(i);
                    tmpNewChar += moneyArray[perchar];
                    if(i==0)tmpNewChar =tmpNewChar + "角";
                    if(i==1)tmpNewChar = tmpNewChar + "分";
                    newChar = newChar + tmpNewChar;
                }
            }
            //替換所有無用漢字
            while(newChar.search("零零") != -1)
                newChar = newChar.replace("零零", "零");
            newChar = newChar.replace("零億", "億");
            newChar = newChar.replace("億萬", "億");
            newChar = newChar.replace("零萬", "萬");
            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;
        }