使用Javascript setTimeout调用MVC操作来保持活动表单身份验证

Question

我使用setTimeout来调用MVC操作来尝试保持用户表单身份验证的活动状态。

当我正常调用此代码（即不使用setTimeout）时，它会保持表单身份验证活着。

在setTimeout中调用时，它不会。

我的问题是为什么当通过setTimeout调用时不工作？

$(document).ready(function() { 

    DoKeepAlive(); //simple test when page loads....does keep forms auth alive 
}); 


var timeout= 0; 
timeout= setTimeout(validationPrompt, 2 * 60 * 1000); 

function validationPrompt() { 

    var answer = confirm("Your session will timeout in less than a minute. Click OK to stay logged in, and reset the timout period.") 
    if (answer) { 

     DoKeepAlive();  //when called in here by setTimeout, does NOT keep forms auth alive 

     //re-set the 10 minutes count 
     clearTimeout(timeout); 
     timeout= setTimeout(validationPrompt, 2 * 60 * 1000); 
    } 
    else { 
     var URL = "<%= Url.Content("~/Account/Logoff") %>" 
     window.location = URL; 
    } 
} 

function DoKeepAlive(){ 

     var URL = "<%= Url.Content("~/Account/ValidateAuthentication") %>" 
    $.post(
      //"../../Account/ValidateAuthentication",  
      URL, 
      function(data) { 

      } 
     ); 

} 

Answer 1

经过多次来回发酵，我发现今天我使用的服务器上的时间慢了3分钟。在这个thread触发帮助我。

Answer 2

很难说为什么你的代码不工作。我会首先尝试简化它：

<script type="text/javascript"> 
    window.setInterval(function() { 
     var answer = confirm("Your session will timeout in less than a minute. Click OK to stay logged in, and reset the timout period."); 
     if (answer) { 
      $.post('<%= Url.Action("ValidateAuthentication", "Account") %>'); 
     } else { 
      window.location.href = '<%= Url.Action("Logoff", "Account") %>'; 
     } 
    }, 2 * 60 * 1000); 
</script> 

Answer 3

尝试把timeout= setTimeout(validationPrompt, 2 * 60 * 1000);内$(document).ready？