js将数字的金额转换成中文大写金额

最近在工作的时候遇到要把数字的金额转成中文大写，例如，600.99 转成陆佰元玖角玖分！好了废话不多说，开始上代码。

function moneyToCapital(num) {
    var fuhao = "";
    var text = num + "";
    if (text.indexOf("-") > -1) {
        num = text.replace("-", "");
        fuhao = "负"
    }
    var money1 = new Number(num);
    var monee = Math.round(money1 * 100).toString(10);
    var leng = monee.length;
    var monval = "";
    for (i = 0; i < leng; i++) {
        monval = monval + to_upper(monee.charAt(i)) + to_mon(leng - i - 1)
    }
    return fuhao + repace_acc(monval)
}
// 将数字转为大写的中文字
function to_upper(a) {
    switch (a) {
    case "0":
        return "零";
        break;
    case "1":
        return "壹";
        break;
    case "2":
        return "贰";
        break;
    case "3":
        return "叁";
        break;
    case "4":
        return "肆";
        break;
    case "5":
        return "伍";
        break;
    case "6":
        return "陆";
        break;
    case "7":
        return "柒";
        break;
    case "8":
        return "捌";
        break;
    case "9":
        return "玖";
        break;
    default:
        return ""
    }
}
function to_mon(a) {
    if (a > 10) {
        a = a - 8;
        return (to_mon(a))
    }
    switch (a) {
    case 0:
        return "分";
        break;
    case 1:
        return "角";
        break;
    case 2:
        return "元";
        break;
    case 3:
        return "拾";
        break;
    case 4:
        return "佰";
        break;
    case 5:
        return "仟";
        break;
    case 6:
        return "万";
        break;
    case 7:
        return "拾";
        break;
    case 8:
        return "佰";
        break;
    case 9:
        return "仟";
        break;
    case 10:
        return "亿";
        break
    }
}
function repace_acc(Money) {
    Money = Money.replace("零分", "");
    Money = Money.replace("零角", "零");
    var yy;
    var outmoney;
    outmoney = Money;
    yy = 0;
    while (true) {
        var lett = outmoney.length;
        outmoney = outmoney.replace("零元", "元");
        outmoney = outmoney.replace("零万", "万");
        outmoney = outmoney.replace("零亿", "亿");
        outmoney = outmoney.replace("零仟", "零");
        outmoney = outmoney.replace("零佰", "零");
        outmoney = outmoney.replace("零零", "零");
        outmoney = outmoney.replace("零拾", "零");
        outmoney = outmoney.replace("亿万", "亿零");
        outmoney = outmoney.replace("万仟", "万零");
        outmoney = outmoney.replace("仟佰", "仟零");
        yy = outmoney.length;
        if (yy == lett) {
            break
        }
    }
    yy = outmoney.length;
    if (outmoney.charAt(yy - 1) == "零") {
        outmoney = outmoney.substring(0, yy - 1)
    }
    yy = outmoney.length;
    if (outmoney.charAt(yy - 1) == "元") {
        outmoney = outmoney + "整"
    }
    return outmoney
}
调用  var A= 600.99
console.log(moneyToCapital(A))  //陆佰元玖角玖分