JavaScript金额转大写

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    var maxNum = 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 === '') { //不能用==        return '';    }    money = parseFloat(money);    if (money >= maxNum) {        //超出最大处理数字        return '';    }    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;}