js转换人民币金额 小写到大写

u.bigNum=function(n)
                    {
                        var fraction = ['角', '分'];
                        var digit = ['零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'];
                        var unit = [ ['元', '万', '亿'], ['', '拾', '佰', '仟']  ];
                        var head = n < ? '欠': '';
                        n = Math.abs(n);    

                        var s = '';    

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

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

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