js怎么把数字金额转换成中文大写金额

Posted 2023-04-26

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参考技术A http://link.fobshanghai.com/rmb.htm，参考网址。
<script>

function convertCurrency(currencyDigits)

// Constants:

var MAXIMUM_NUMBER = 99999999999.99;

// Predefine the radix characters and currency symbols for output:

var CN_ZERO = "零";

var CN_ONE = "壹";

var CN_TWO = "贰";

var CN_THREE = "叁";

var CN_FOUR = "肆";

var CN_FIVE = "伍";

var CN_SIX = "陆";

var CN_SEVEN = "柒";

var CN_EIGHT = "捌";

var CN_NINE = "玖";

var CN_TEN = "拾";

var CN_HUNDRED = "佰";

var CN_THOUSAND = "仟";

var CN_TEN_THOUSAND = "万";

var CN_HUNDRED_MILLION = "亿";

var CN_SYMBOL = "人民币";

var CN_DOLLAR = "元";

var CN_TEN_CENT = "角";

var CN_CENT = "分";

var CN_INTEGER = "整";

// Variables:

var integral; // Represent integral part of digit number.

var decimal; // Represent decimal part of digit number.

var outputCharacters; // The output result.

var parts;

var digits, radices, bigRadices, decimals;

var zeroCount;

var i, p, d;

var quotient, modulus;

// Validate input string:

currencyDigits = currencyDigits.toString();

if (currencyDigits == "")

alert("请输入小写金额！");

return "";

if (currencyDigits.match(/[^,.\d]/) != null)

alert("小写金额含有无效字符！");

return "";

if ((currencyDigits).match(/^((\d1,3(,\d3)*(.((\d3,)*\d1,3))?)|(\d+(.\d+)?))$/) == null)

alert("小写金额的格式不正确！");

return "";

// Normalize the format of input digits:

currencyDigits = currencyDigits.replace(/,/g, ""); // Remove comma delimiters.

currencyDigits = currencyDigits.replace(/^0+/, ""); // Trim zeros at the beginning.

// Assert the number is not greater than the maximum number.

if (Number(currencyDigits) > MAXIMUM_NUMBER)

alert("金额过大，应小于1000亿元！");

return "";

// Process the coversion from currency digits to characters:

// Separate integral and decimal parts before processing coversion:

parts = currencyDigits.split(".");

if (parts.length > 1)

integral = parts[0];

decimal = parts[1];

// Cut down redundant decimal digits that are after the second.

decimal = decimal.substr(0, 2);

else

integral = parts[0];

decimal = "";

// Prepare the characters corresponding to the digits:

digits = new Array(CN_ZERO, CN_ONE, CN_TWO, CN_THREE, CN_FOUR, CN_FIVE, CN_SIX, CN_SEVEN, CN_EIGHT, CN_NINE);

radices = new Array("", CN_TEN, CN_HUNDRED, CN_THOUSAND);

bigRadices = new Array("", CN_TEN_THOUSAND, CN_HUNDRED_MILLION);

decimals = new Array(CN_TEN_CENT, CN_CENT);

// Start processing:

outputCharacters = "";

// Process integral part if it is larger than 0:

if (Number(integral) > 0)

zeroCount = 0;

for (i = 0; i < integral.length; i++)

p = integral.length - i - 1;

d = integral.substr(i, 1);

quotient = p / 4;

modulus = p % 4;

if (d == "0")

zeroCount++;

else

if (zeroCount > 0)

outputCharacters += digits[0];

zeroCount = 0;

outputCharacters += digits[Number(d)] + radices[modulus];

if (modulus == 0 && zeroCount < 4)

outputCharacters += bigRadices[quotient];

zeroCount = 0;

outputCharacters += CN_DOLLAR;

// Process decimal part if there is:

if (decimal != "")

for (i = 0; i < decimal.length; i++)

d = decimal.substr(i, 1);

if (d != "0")

outputCharacters += digits[Number(d)] + decimals[i];

// Confirm and return the final output string:

if (outputCharacters == "")

outputCharacters = CN_ZERO + CN_DOLLAR;

if (decimal == "")

outputCharacters += CN_INTEGER;

outputCharacters = CN_SYMBOL + outputCharacters;

return outputCharacters;

</script>