JS數字金額大寫轉換(可以處理整數,小數,負數)

//數字金額大寫轉換

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>