以下是 JavaScript 實現(xiàn)金額轉(zhuǎn)大寫的代碼：

function convertCurrency(money) {
    //漢字的數(shù)字
    var cnNums = new Array(
        "零",
        "壹",
        "貳",
        "叁",
        "肆",
        "伍",
        "陸",
        "柒",
        "捌",
        "玖"
    );
    //基本單位
    var cnIntRadice = new Array("", "拾", "佰", "仟");
    //對應整數(shù)部分擴展單位
    var cnIntUnits = new Array("", "萬", "億", "兆");
    //對應小數(shù)部分單位
    var cnDecUnits = new Array("角", "分", "毫", "厘");
    //整數(shù)金額時后面跟的字符
    var cnInteger = "整";
    //整型完以后的單位
    var cnIntLast = "元";
    //最大處理的數(shù)字
    var maxNum = 999999999999999.9999;
    //金額整數(shù)部分
    var integerNum;
    //金額小數(shù)部分
    var decimalNum;
    //輸出的中文金額字符串
    var chineseStr = "";
    //分離金額后用的數(shù)組，預定義
    var parts;
    if (money == "") {
        return "";
    }
    money = parseFloat(money);
    if (money >= maxNum) {
        //超出最大處理數(shù)字
        return "";
    }
    if (money == 0) {
        chineseStr = cnNums[0] + cnIntLast + cnInteger;
        return chineseStr;
    }
    //轉(zhuǎn)換為字符串
    money = money.toString();
    if (money.indexOf(".") == -1) {
        integerNum = money;
        decimalNum = "";
    } else {
        parts = money.split(".");
        integerNum = parts[0];
        decimalNum = parts[1].substr(0, 4);
    }
    //獲取整型部分轉(zhuǎn)換
    if (parseInt(integerNum, 10) > 0) {
        var zeroCount = 0;
        var IntLen = integerNum.length;
        for (var i = 0; i < IntLen; i++) {
            var n = integerNum.substr(i, 1);
            var p = IntLen - i - 1;
            var q = p / 4;
            var m = p % 4;
            if (n == "0") {
                zeroCount++;
            } else {
                if (zeroCount > 0) {
                    chineseStr += cnNums[0];
                }
                //歸零
                zeroCount = 0;
                chineseStr += cnNums[parseInt(n)] + cnIntRadice[m];
            }
            if (m == 0 && zeroCount < 4) {
                chineseStr += cnIntUnits[q];
            }
        }
        chineseStr += cnIntLast;
    }
    //小數(shù)部分
    if (decimalNum != "") {
        var decLen = decimalNum.length;
        for (var i = 0; i < decLen; i++) {
            var n = decimalNum.substr(i, 1);
            if (n != "0") {
                chineseStr += cnNums[Number(n)] + cnDecUnits[i];
            }
        }
    }
    if (chineseStr == "") {
        chineseStr += cnNums[0] + cnIntLast + cnInteger;
    } else if (decimalNum == "") {
        chineseStr += cnInteger;
    }
    return chineseStr;
}

使用方法：

var money = 1234.56;
var chineseStr = convertCurrency(money);
console.log(chineseStr); // 壹仟貳佰叁拾肆元伍角陸分

以下是一種簡單的 JavaScript 實現(xiàn)金額轉(zhuǎn)大寫的方式：

function convertCurrency(money) {
    // 漢字的數(shù)字
    const cnNums = ['零', '壹', '貳', '叁', '肆', '伍', '陸', '柒', '捌', '玖'];
    // 基本單位
    const cnIntRadice = ['', '拾', '佰', '仟'];
    // 對應整數(shù)部分擴展單位
    const cnIntUnits = ['', '萬', '億', '兆'];
    // 對應小數(shù)部分單位
    const cnDecUnits = ['角', '分', '毫', '厘'];
    // 整數(shù)金額時后面跟的字符
    const cnInteger = '整';
    // 整型完以后的單位
    const cnIntLast = '元';

    let chineseStr = ''; // 輸出的中文金額字符串
    let parts; // 分離金額后用的數(shù)組，預定義
    if (money == '') {
        return '';
    }
    money = parseFloat(money);
    if (isNaN(money) || money >= 1000000000000) {
        return '';
    }
    money = money.toFixed(2); // 轉(zhuǎn)換為字符串，并保留兩位小數(shù)
    parts = money.split('.');
    let integerNum = parts[0];
    let decimalNum = parts[1];
    if (parseInt(integerNum) > 0) {
        let zeroCount = 0;
        let IntLen = integerNum.length;
        for (let i = 0; i < IntLen; i++) {
            let n = integerNum.substr(i, 1);
            let p = IntLen - i - 1;
            let q = p / 4;
            let m = p % 4;
            if (n == '0') {
                zeroCount++;
            } else {
                if (zeroCount > 0) {
                    chineseStr += cnNums[0];
                }
                zeroCount = 0;
                chineseStr += cnNums[parseInt(n)] + cnIntRadice[m];
            }
            if (m == 0 && zeroCount < 4) {
                chineseStr += cnIntUnits[q];
            }
        }
        chineseStr += cnIntLast;
    }
    if (decimalNum != '') {
        let decLen = decimalNum.length;
        for (let i = 0; i < decLen; i++) {
            let n = decimalNum.substr(i, 1);
            if (n != '0') {
                chineseStr += cnNums[Number(n)] + cnDecUnits[i];
            }
        }
    }
    if (chineseStr == '') {
        chineseStr += cnNums[0] + cnIntLast + cnInteger;
    } else if (decimalNum == '') {
        chineseStr += cnInteger;
    }
    return chineseStr;
}

使用方法和上面的例子相同。