data-ajax-success执行回调函数不生效

Question

 代码如下
   @using (Ajax.BeginForm("UserLogin", new { }, new AjaxOptions() { HttpMethod = "post", OnSuccess = "afterLogin" }, new { id = "loginForm" }))
                      {
                    <table cellpadding="0" cellspacing="0">
                        <tbody>
                            <tr>
                                <td align="left" colspan="2">
                                    <h3>
                                        CMS系统账号登录</h3>
                                </td>
                            </tr>
                            <tr>
                                <td align="right">
                                    账号：
                                </td>
                                <td align="left">
                                    <input type="text" name="LoginCode" id="LoginCode" class="login-text" />

                                </td>
                            </tr>
                            <tr>
                                <td align="right">
                                    密码：
                                </td>
                                <td align="left">
                                    <input type="password" name="LoginPwd" id="LoginPwd" value="123" class="login-text" />
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    验证码：
                                </td>
                                <td align="left">
                                    <input type="text" class="login-text" id="code" name="vCode" value="1" />
                                </td>
                            </tr>
                            <tr>
                                <td>
                                </td>
                                <td>
                                    <img id="img" src="/Login/ShowValidateCode/?id=1" style="float: left; height: 24px;" />
                                    <div style="float: left; margin-left: 5px; margin-top: 10px;">
                                        <a href="javascript:void(0)" onclick="changeCheckCode();">看不清，换一张</a>
                                    </div>
                                </td>
                            </tr>
                            <tr>
                                <td align="center" colspan="2">
                                    <input type="submit" id="btnLogin" value="登录" class="login-btn" />
                                    <span id="errorMsg"></span>
                                </td>
                            </tr>
                        </tbody>
                    </table>

                      }


            生成的html：
            <form action="/Login/UserLogin" data-ajax="true" data-ajax-method="post" data-ajax-success="afterLogin" id="loginForm" method="post">     


            ![图片说明](https://img-ask.csdn.net/upload/201602/03/1454483418_752110.png)
            都显示登录成功了，但是就是不执行
              function afterLogin(data){
            alert();
        }
       的函数？ 

            求大神指点！！！

Answer 1

把afterLogin写在页面的前面看看，外面要包裹

 <script type=javascript>