js 金額轉中文大寫格式

js 數字金額轉中文大寫格式

moneyToChinese調用示例：

moneyToChinese('199.99');
	//console：壹佰玖拾玖元玖角玖分
           

function moneyToChinese(money) {
		let cnNums = new Array('零', '壹', '貳', '叁', '肆', '伍', '陸', '柒', '捌', '玖'); //漢字的數字
	   	let cnIntRadice = new Array('', '拾', '佰', '仟'); //基本機關
	   	let cnIntUnits = new Array('', '萬', '億', '兆'); //對應整數部分擴充機關
	   let cnDecUnits = new Array('角', '分', '毫', '厘'); //對應小數部分機關
	   let cnInteger = '整'; //整數金額時後面跟的字元
	   let cnIntLast = '元'; //整型完以後的機關
	   let maxNum = 999999999999999.9999; //最大處理的數字
	   let IntegerNum; //金額整數部分
	   let DecimalNum; //金額小數部分
	   let ChineseStr = ''; //輸出的中文金額字元串
	   let parts; //分離金額後用的數組，預定義    
	   let Symbol = ''; //正負值标記
	   if(money == '') {
	      ChineseStr = cnNums[0] + cnIntLast + cnInteger;
	      return ChineseStr;
	   }
	
	   money = parseFloat(money);
	   if(money >= maxNum) {
	      alert('超出最大處理數字');
	      return '';
	   }
	   if(money == 0) {
	      ChineseStr = cnNums[0] + cnIntLast + cnInteger;
	      return ChineseStr;
	   }
	   if(money < 0) {
	      money = -money;
	      Symbol = '負 ';
	   }
	   money = money.toString(); //轉換為字元串
	   if(money.indexOf('.') == -1) {
	      IntegerNum = money;
	      DecimalNum = '';
	   } 
	   else {
	      parts = money.split('.');
	      IntegerNum = parts[0];
	      DecimalNum = parts[1].substr(0, 4);
	   }
	   if(parseInt(IntegerNum, 10) > 0) { //擷取整型部分轉換
	      let zeroCount = 0;
	      let IntLen = IntegerNum.length;
	      for(let i = 0; i < IntLen; i++) {
	         let n = IntegerNum.substr(i, 1);
	         let p = IntLen - i - 1;
	         let q = p / 4;
	         let m = p % 4;
	         if(n == '0') {
	            zeroCount++;
	         } 
	         else {
	            if(zeroCount > 0) {
	               ChineseStr += cnNums[0];
	            }
	            zeroCount = 0; //歸零
	            ChineseStr += cnNums[parseInt(n)] + cnIntRadice[m];
	         }
	         if(m == 0 && zeroCount < 4) {
	            ChineseStr += cnIntUnits[q];
	         }
	      }
	      ChineseStr += cnIntLast;
	      //整型部分處理完畢
	   }
	   if(DecimalNum != '') { //小數部分
	      let decLen = DecimalNum.length;
	      for(let i = 0; i < decLen; i++) {
	         let n = DecimalNum.substr(i, 1);
	         if(n != '0') {
	            ChineseStr += cnNums[Number(n)] + cnDecUnits[i];
	         }
	      }
	   }
	   if(ChineseStr == '') {
	      ChineseStr += cnNums[0] + cnIntLast + cnInteger;
	   } 
	   else if(DecimalNum == '') {
	      ChineseStr += cnInteger;
	   }
	   ChineseStr = Symbol + ChineseStr;
	
	   return ChineseStr;
}