JS日期格式化

Date.prototype.Format =function (fmt) {

            var o = {

            "M+":this.getMonth() +1, //月份

            "d+":this.getDate(),//日

            "h+":this.getHours(),//小时

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

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

            "q+":Math.floor((this.getMonth() +3) / 3), //季度

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

            };

            if (/(y+)/.test(fmt))fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 -RegExp.$1.length));

            for (vark in o)

            if (newRegExp("(" +k + ")").test(fmt))fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" +o[k]).substr(("" +o[k]).length)));

            return fmt;

         }

        var time2 =new Date().Format("yyyy-MM-dd hh:mm:ss");

                console.log(time2);