JS将数字金额转换为大写人民币汉字

代码如下所示：

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 == '') { 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;

}