JQuery 判断起始日期与结束日期大小

//判断起始日期与结束日期大小
        function ckdate() {
            var endtime = $('#txtStorageTimeEnd').val();
            var starttime = $('#txtStorageTimeStart').val();
            var start = new Date(starttime.replace("-", "/").replace("-", "/"));
            var end = new Date(endtime.replace("-", "/").replace("-", "/"));
            if (end < start) {
                alert('结束日期不能小于开始日期！');
                return false;
            }
            else {
                return true;
            }

        }

        到