qq,sina第3方登录js版

                $(".tc").click(function (e) {

                e.preventDefault();

                //alert("QQ="+QC.Login.check());

                if (QC.Login.check() == true) {

                    QC.Login.signOut();

                }

                else {

                }

                //alert("sina="+WB2.checkLogin())

                if (WB2.checkLogin() == true) {

                    WB2.logout();

                    //alert(2);

                }

                else {

                }

                location.href = "/Account/LogOut";

                //alert(1);

            });

<script src="http://tjs.sjs.sinajs.cn/open/api/js/wb.js?appkey=YOUR APPKEY" type="text/javascript"

        charset="utf-8"></script>

    <script type="text/javascript" src="http://qzonestyle.gtimg.cn/qzone/openapi/qc_loader.js"

        data-appid="appid" data-redirecturi="redirect_url"charset="utf-8"></script>

    <%if (!UserContext.Instance.IsLogined)

      { %>

    <script type="text/javascript">

        $(function () {

            QC.Login({//按默认样式插入QQ登录按钮

                btnId: "qqLoginBtn", //插入按钮的节点id

                size: "C_S", //按钮尺寸，可用值[A_XL| A_L| A_M| A_S|  B_M| B_S| C_S]，可选，默认B_S

                scope: "get_user_info", //展示授权，可选

                display: "pc" //应用场景，可选

            }, function (reqData) {//登录成功|

                $("#hidQQName").val(reqData.nickname);

                QC.Login.getMe(function (openId, accessToken, backData) {

                    var name = $("#hidQQName").val();

                    //登录成功后腾讯会返回一个唯一标识的openid可用于你自己网站绑定的用户存档

                    $.post("/Home/CheckLogin?openId=" + openId + "&name=" + name, function (data) {

                        //alert(data.Result + "==1");

                        if (data.Result == 1 || data.Result == 2) {

                            //alert(window.opener + "||" + window.parent)

                            if (window.opener != null) {

                                //alert(333);

                                window.opener.location.reload();

                                //window.parent.location.href = window.parent.location.href;

                                window.close();

                            }

                        }

                    })

                });

            }, function () {

                //alert('QQ登录注销成功');

            });

        })

    </script>

    <%} %>

    <%if (!UserContext.Instance.IsLogined)

      { %>

    <script type="text/javascript">

        WB2.anyWhere(function (W) {

            W.widget.connectButton({

                id: "wb_connect_btn",

                type: "5,5", //type：连接按钮样式，是登录前的按钮样式[1-7]和登录后的样式[1-5]的组合，可选，默认为a"3,2"

                callback: {

                    login: function (o) {//登录后的回调函数

                        $("#hidQQName").val(o.screen_name);

                        var name = $("#hidQQName").val();

                        $.post("/Home/CheckLogin?openId=" + o.id + "&name=" + name, function (data) {

                            //if (window.opener != null) {

                            alert("sina");

                            window.parent.location.href = window.parent.location.href;

                            //}

                        });

                    },

                    logout: function () {//退出后的回调函数

                        alert('logout');

                    }

                }

            });

        });

    </script>

前台：

  <a class="tc" href="/Account/Logout">[退出]</a>//退出登录状态

<span id="qqLoginBtn" class="logQQ">qq</span>

<span id="wb_connect_btn" class="logSina">sina</span>

后台：

        public void Logout()

        {

            UserContext.Instance.LoginOut();

            Session.RemoveAll();

            HttpCookie cookie = new HttpCookie("COOKIE_NAME_FOR_USER");

            cookie.Expires = DateTime.Now.AddDays(-1);

            Response.Cookies.Add(cookie);

            Response.Redirect("/Home/Index");

        }