/**
* 金额格式化
* 例子：fmoney("12345.675910", 3)，返回12,345.676
* @data 备注lhh 2016-09-18
*/

function fmoney(s, n) {

    if (n == 0) {

        s = parseFloat((s + "").replace(/[^\d\.-]/g, "")) + "";

        var l = s.split(".")[0].split("").reverse(),

            t = "";

        for (i = 0; i < l.length; i++) {

            t += l[i] + ((i + 1) % 3 == 0 && (i + 1) != l.length ? "," : "");

        }

        return t.split("").reverse().join("");

    }

    n = n > 0 && n <= 20 ? n : 2;

    s = parseFloat((s + "").replace(/[^\d\.-]/g, "")).toFixed(n) + "";

    var l = s.split(".")[0].split("").reverse(),

        r = s.split(".")[1];

    t = "";

    for (i = 0; i < l.length; i++) {

        t += l[i] + ((i + 1) % 3 == 0 && (i + 1) != l.length ? "," : "");

    }

    return t.split("").reverse().join("") + "." + r;

}