export const smallToBig = (money) => {
    //  将数字金额转换为大写金额
    var cnNums = new Array(
        "零",
        "壹",
        "贰",
        "叁",
        "肆",
        "伍",
        "陆",
        "柒",
        "捌",
        "玖"
    ); //汉字的数字
    var cnIntRadice = new Array("", "拾", "佰", "仟"); //基本单位
    var cnIntUnits = new Array("", "万", "亿", "兆"); //对应整数部分扩展单位
    var cnDecUnits = new Array("角", "分", "毫", "厘"); //对应小数部分单位
    var cnInteger = "整"; //整数金额时后面跟的字符
    var cnIntLast = "元"; //整数完以后的单位
    //最大处理的数字
    var maxNum = 999999999999999.9999;
    var integerNum; //金额整数部分
    var decimalNum; //金额小数部分
    //输出的中文金额字符串
    var chineseStr = "";
    var parts; //分离金额后用的数组，预定义
    if (money == null || money == "") {
        return "";
    }

    money = parseFloat(money);
    if (money >= maxNum) {
        //超出最大处理数字
        return "超出最大处理数字";
    }
    if (money == 0) {
        chineseStr = cnNums[0] + cnIntLast + cnInteger;
        return chineseStr;
    }

    //四舍五入保留两位小数,转换为字符串
    money = Math.round(money * 100).toString();
    integerNum = money.substr(0, money.length - 2);
    decimalNum = money.substr(money.length - 2);

    //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 == "" || /^0*$/.test(decimalNum)) {
        chineseStr += cnInteger;
    }
    return chineseStr;
}