js 金额转中文大写格式

js 数字金额转中文大写格式

moneyToChinese调用示例：

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

function moneyToChinese(money) {
		let cnNums = new Array('零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'); //汉字的数字
	   	let cnIntRadice = new Array('', '拾', '佰', '仟'); //基本单位
	   	let cnIntUnits = new Array('', '万', '亿', '兆'); //对应整数部分扩展单位
	   let cnDecUnits = new Array('角', '分', '毫', '厘'); //对应小数部分单位
	   let cnInteger = '整'; //整数金额时后面跟的字符
	   let cnIntLast = '元'; //整型完以后的单位
	   let maxNum = 999999999999999.9999; //最大处理的数字
	   let IntegerNum; //金额整数部分
	   let DecimalNum; //金额小数部分
	   let ChineseStr = ''; //输出的中文金额字符串
	   let parts; //分离金额后用的数组，预定义    
	   let Symbol = ''; //正负值标记
	   if(money == '') {
	      ChineseStr = cnNums[0] + cnIntLast + cnInteger;
	      return ChineseStr;
	   }
	
	   money = parseFloat(money);
	   if(money >= maxNum) {
	      alert('超出最大处理数字');
	      return '';
	   }
	   if(money == 0) {
	      ChineseStr = cnNums[0] + cnIntLast + cnInteger;
	      return ChineseStr;
	   }
	   if(money < 0) {
	      money = -money;
	      Symbol = '负 ';
	   }
	   money = money.toString(); //转换为字符串
	   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) { //获取整型部分转换
	      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; //归零
	            ChineseStr += cnNums[parseInt(n)] + cnIntRadice[m];
	         }
	         if(m == 0 && zeroCount < 4) {
	            ChineseStr += cnIntUnits[q];
	         }
	      }
	      ChineseStr += cnIntLast;
	      //整型部分处理完毕
	   }
	   if(DecimalNum != '') { //小数部分
	      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;
}