JavaScript dynamically converts numerical amounts into Chinese capital amounts_javascript skills

Copy code The code is as follows:

function convertCurrency(currencyDigits) {
// Constants :
var MAXIMUM_NUMBER = 99999999999.99;
// Predefine the radix characters and currency symbols for output:
var CN_ZERO = "zero";
var CN_ONE = "壹";
var CN_TWO = "二";
var CN_THREE = "三";
var CN_FOUR = "四";
var CN_FIVE = "五";
var CN_SIX = "鲁";
var CN_SEVEN = "柒";
var CN_EIGHT = "捌";
var CN_NINE = "玖";
var CN_TEN = "十";
var CN_HUNDRED = "hundred";
var CN_THOUSAND = "仟";
var CN_TEN_THOUSAND = "10,000";
var CN_HUNDRED_MILLION = "100 million";
var CN_SYMBOL = "RMB";
var CN_DOLLAR = "yuan";
var CN_TEN_CENT = "angle";
var CN_CENT = "cent";
var CN_INTEGER = "whole";

// 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("Empty input!");
return "";
}
if (currencyDigits.match(/[^,.d]/) != null) {
//alert("Invalid characters in the input string!");
return "";
}
if ((currencyDigits).match(/^((d{1,3 }(,d{3})*(.((d{3},)*d{1,3}))?)|(d (.d )?))$/) == null) {
//alert("Illegal format of digit number!");
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("The amount you entered is too large, please re-enter!");
return "";
}

// Process the coverage from currency digits to characters:
// Separate integral and decimal parts before processing coverage:
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];
}
}
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;
}