JS中毫秒转字符串

        来源于CSDN论坛，膜拜4L大神：https://bbs.csdn.net/topics/390374122

var format = function (time, format) {
            var t = new Date(time);
            var tf = function (i) {
                return (i < 10 ? '0' : '') + i
            };
            return format.replace(/yyyy|MM|dd|HH|mm|ss/g, function (a) {
                switch (a) {
                    case 'yyyy':
                        return tf(t.getFullYear());
                        break;
                    case 'MM':
                        return tf(t.getMonth() + 1);
                        break;
                    case 'mm':
                        return tf(t.getMinutes());
                        break;
                    case 'dd':
                        return tf(t.getDate());
                        break;
                    case 'HH':
                        return tf(t.getHours());
                        break;
                    case 'ss':
                        return tf(t.getSeconds());
                        break;
                }
            })
        }
        alert(format(new Date().getTime(), 'yyyy-MM-dd HH:mm:ss'))