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Javascript:将人民币数字转换成大写形式

本帖由 notnull2006-02-14 发布。版面名称:前端开发

  1. notnull

    notnull New Member

    注册:
    2005-09-27
    帖子:
    11,720
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    37
    用JavaScript编写了一功能函数,完成如下功能:

    1、对一给定字符串,如:1234.55,转换成正确的中文货币描述:如:人民币壹仟贰佰叁拾四元五角五分

    2、输入的字符串形式可以是以下几种:带分隔符的,如:123,456,789.00;不带分隔符的,如:123456789

    3、输出的中文货币描述要符合规范,如:0.3----人民币三角;0.33----人民币三角三分;1----人民币壹元整
    100----人民币壹佰元整;1001----人民币壹仟零壹元整;10000001----人民币壹仟万零壹元整;
    1001001----人民币壹仟零壹万零壹元整,等

    4、最大转换能到百亿

    具体的代码如下:
    代码:
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    <html>
    <head>
    <title></title>
    <script language="jscript">
    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("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("Too large a number to convert!");
    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];
    }
    }
    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;
    }
    }
    }
    // 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>
    </head>
    <body>
    <INPUT id="Digits" type="text" name="Digits" size=20>
    <INPUT id="Convert" type="button" value="Convert" name="Convert" onclick="Result.value = convertCurrency(Digits.value);">
    <INPUT id="Result" type="text" name="Result" size=60>
    </body>
    </html>
    
    


    以上代码运用了正则表达式的功能,除了可以正确的转换成人民币的大写形式以外,还可以判断输入的形式是否正确有效。
     
  2. Fufuokcom

    Fufuokcom New Member

    注册:
    2006-02-15
    帖子:
    1
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    0
    谢谢楼主分享。

    不错的东东。:)