//日期格式化

Date.prototype.format = function (format) {

    var o =

    {

        "M+": this.getMonth() + , //month

        "d+": this.getDate(),    //day

        "h+": this.getHours(),   //hour

        "m+": this.getMinutes(), //minute

        "s+": this.getSeconds(), //second

        "q+": Math.floor((this.getMonth() + ) / ),  //quarter

        "S": this.getMilliseconds() //millisecond

    }

    if (/(y+)/.test(format))

        format = format.replace(RegExp.$, (this.getFullYear() + "").substr( - RegExp.$.length));

    for (var k in o)

        if (new RegExp("(" + k + ")").test(format))

            format = format.replace(RegExp.$, RegExp.$.length ==  ? o[k] : ("" + o[k]).substr(("" + o[k]).length));

    return format;

}