將人民幣金額轉換為大寫的JavaScript代碼

/* 數字金額大寫轉換(可以處理整數,小數,負數) /

function upDigit(n)

{

    var fraction = ['角', '分'];

    var digit = ['零', '壹', '貳', '叁', '肆', '伍', '陸', '柒', '捌', '玖'];

    var unit = [ ['元', '萬', '億'], ['', '拾', '佰', '仟']  ];

    var head = n < 0? '欠': '';

    n = Math.abs(n);


var s = '';  

for (var i = 0; i < fraction.length; i++)   
{  
    s += (digit[Math.floor(n * 10 * Math.pow(10, i)) % 10] + fraction[i]).replace(/零./, '');  
}  
s = s || '整';  
n = Math.floor(n);  

for (var i = 0; i < unit[0].length && n > 0; i++)   
{  
    var p = '';  
    for (var j = 0; j < unit[1].length && n > 0; j++)   
    {  
        p = digit[n % 10] + unit[1][j] + p;  
        n = Math.floor(n / 10);  
    }  
    s = p.replace(/(零.)*零$/, '').replace(/^$/, '零')  + unit[0][i] + s;  
}  
return head + s.replace(/(零.)*零元/, '元').replace(/(零.)+/g, '零').replace(/^整$/, '零元整');  

} </pre>