RmbUtils = { convertCurrency: function (currencyDigits) { //常量 var MAXIMUM_NUMBER = 99999999999.99; //預先定義輸出的基數字符和貨幣符號: var CN_ZERO = "零"; var CN_ONE = "壹"; var CN_TWO = "貳"; var CN_THREE = "叄"; var CN_FOUR = "肆"; var CN_FIVE = "伍"; var CN_SIX = "陸"; 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 = "萬"; var CN_HUNDRED_MILLION = "億"; var CN_SYMBOL = ""; var CN_DOLLAR = "元"; var CN_TEN_CENT = "角"; var CN_CENT = "分"; var CN_INTEGER = "整"; // 變量: 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; // 校驗輸入字符串: currencyDigits = currencyDigits.toString(); if (currencyDigits == "") { alert("不能爲空。"); return false; } if (currencyDigits.match(/[^,.\d]/) != null) { alert("請輸入數字。"); return ''; } if ((currencyDigits).match(/^((\d{1,3}(,\d{3})*(.((\d{3},)*\d{1,3}))?)|(\d+(.\d+)?))$/) == null) { alert("請輸入正確數字。"); return false; } // 將輸入數字的格式標準化 currencyDigits = currencyDigits.replace(/,/g, ""); // Remove comma delimiters. currencyDigits = currencyDigits.replace(/^0+/, ""); // Trim zeros at the beginning. // 超出了最大數字轉換 if (Number(currencyDigits) > MAXIMUM_NUMBER) { alert("超出了最大數字轉換。"); return false; } //處理貨幣數字到字符的轉換 // 將積分部分和小數部分分開 parts = currencyDigits.split("."); if (parts.length > 1) { integral = parts[0]; decimal = parts[1]; // 小數保留2位. decimal = decimal.substr(0, 2); } else { integral = parts[0]; decimal = ""; } // 準備數字對應的字符 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); //開始處理 outputCharacters = ""; // 處理整數部分 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; } // 處理小數部分 if (decimal != "") { for (i = 0; i < decimal.length; i++) { d = decimal.substr(i, 1); if (d != "0") { outputCharacters += digits[Number(d)] + decimals[i]; } } } // 確認並返回處理結果 if (outputCharacters == "") { outputCharacters = CN_ZERO + CN_DOLLAR; } if (decimal == "") { outputCharacters += CN_INTEGER; } outputCharacters = CN_SYMBOL + outputCharacters; return outputCharacters; } }