liger에서 jQuery 사용법 배우기

//         CSS    
            $(".login-text").focus(function ()
            {
                $(this).addClass("login-text-focus");
            }).blur(function ()
            {
                $(this).removeClass("login-text-focus");
            });

 //jQuery    
            $(document).keydown(function (e)
            {
                if (e.keyCode == 13)
                {
                    dologin();
                }
            });

$.ajax({
                    type: 'post', cache: false, dataType: 'json',
                    url: 'handler/validate.ashx',
                    data: [
                    { name: 'Action', value: 'Login' },
                    { name: 'username', value: username },
                    { name: 'password', value: password }
                    ],
                    success: function (result)
                    {
                        if (!result)
                        {
                            alert('    ,       !');
                            $("#txtUsername").focus();
                            return;
                        } else
                        {
                            location.href = decodeURIComponent(FromUrl);
                        }
                    },
                    error: function ()
                    {
                        alert('      ,         !');
                    },
                    beforeSend: function ()
                    {
                        $.ligerDialog.waitting("     ,   ...");
                        $("#btnLogin").attr("disabled", true);
                    },
                    complete: function ()
                    {
                        $.ligerDialog.closeWaitting();
                        $("#btnLogin").attr("disabled", false);
                    }
                });