javascript数字转大写

万亿级别，这个还有bug的

function money2Uppercase(num) {
    var m = parseInt(num);
    var ml = (m.toString()).split('');
    var wlist = ['', '十', '百', '千', '万', '十', '百', '千', '亿', '十', '百', '千', '万'];
    var numlist = ['零', '一', '二', '三', '四', '五', '六', '七', '八', '九', ];

    var cmlist = wlist.slice(0, ml.length);
    cmlist = cmlist.reverse();

    var result = '';
    for (var i = 0; i < ml.length; i++) {
        result += numlist[ml[i]] + (ml[i] == 0? '': cmlist[i])
    }
    return result;
}
console.log(money2Uppercase(10112030123));