js 金额转大写中文方法

function convertCurrency(money) {
//汉字的数字
var cnNums = new Array(\’零\’, \’壹\’, \’贰\’, \’叁\’, \’肆\’, \’伍\’, \’陆\’, \’柒\’, \’捌\’, \’玖\’);
//基本单位
var cnIntRadice = new Array(\’\’, \’拾\’, \’佰\’, \’仟\’);
//对应整数部分扩展单位
var cnIntUnits = new Array(\’\’, \’万\’, \’亿\’, \’兆\’);
//对应小数部分单位
var cnDecUnits = new Array(\’角\’, \’分\’, \’毫\’, \’厘\’);
//整数金额时后面跟的字符
var cnInteger = \’整\’;
//整型完以后的单位
var cnIntLast = \’元\’;
//最大处理的数字范围 999999999999999.9999
//金额整数部分
var integerNum;
//金额小数部分
var decimalNum;
//输出的中文金额字符串
var chineseStr = \’\’;
//分离金额后用的数组，预定义
var parts;
if (money == \’\’) { return \’\’; }
money = parseFloat(money);
let moneyStr = (\’\’+money).split(\’.\’);
if (money > 999999999999999.9999 || (moneyStr.length>1 && moneyStr[1].length > 4)) {
throw \’超出最大处理数字\’;
}
if (money == 0) {
chineseStr = cnNums[0] + cnIntLast + cnInteger;
return chineseStr;
}
//转换为字符串
money = money.toString();
if (money.indexOf(\’.\’) == -1) {
integerNum = money;
decimalNum = \’\’;
} else {
parts = money.split(\’.\’);
integerNum = parts[0];
decimalNum = parts[1].substr(0, 4);
}
//获取整型部分转换
if (parseInt(integerNum, 10) > 0) {
var zeroCount = 0;
var IntLen = integerNum.length;
for (var i = 0; i < IntLen; i++) {
var n = integerNum.substr(i, 1);
var p = IntLen – i – 1;
var q = p / 4;
var m = p % 4;
if (n == \’0\’) {
zeroCount++;
} else {
if (zeroCount > 0) {
chineseStr += cnNums[0];
}
//归零
zeroCount = 0;
chineseStr += cnNums[parseInt(n)] + cnIntRadice[m];
}
if (m == 0 && zeroCount < 4) {
chineseStr += cnIntUnits[q];
}
}
chineseStr += cnIntLast;
}
//小数部分
if (decimalNum != \’\’) {
var decLen = decimalNum.length;
for (var i = 0; i < decLen; i++) {
var 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;
}
return chineseStr;
}