有没有办法从内部JQuery的Ajax请求处理的错误，例如，当用户从页面导航离开，由此产生的误差被忽略？

Is there a way to handle the error from an ajax request within JQuery such that when the user navigates away from the page, the resulting error is ignored?

$(document).ready(function() {
 $.ajax( {
    url:'/server/url/',
    type: 'POST',
    data: {some..data},
    success:function(response) { do stuff with response },
    error: function(xhr, textStatus, errorThrown) {
           // Don't raise this alert if user has navigated away from the page
           alert('error');
    }
});

我很好奇，如果有人知道的一个干净的方式来处理呢？我知道你可以创建一个 $（窗口）一些逻辑.bind（beforeunload功能（）{}）方法，但我想preFER如果有是一种方式，因为Chrome浏览器似乎不再支持它处理的情况没有这样做。有例如在这种情况下，返回的一个特定的错误？

I'm curious if anybody knows of a clean way to handle this? I know you could create some logic in a $(window).bind("beforeunload", function(){}) method but I'd prefer if there was a way to handle the situation without doing this since Chrome appears to no longer support it. Is there for example a specific error that is returned in this case?

感谢。

推荐答案

它看起来像这个问题的答案是检查jqXHR.status。该 XMLHtt prequest规范概述了这些步骤设置状态：

It looks like the answer to this is to examine the jqXHR.status. The XMLHttpRequest spec outlines these steps to set the status:

状态属性必须返回运行这些步骤的结果是：

The status attribute must return the result of running these steps:

如果状态未发送或打开，返回0，并终止这些步骤。

If the state is UNSENT or OPENED, return 0 and terminate these steps.

如果错误标志设置，返回0，并终止这些步骤。

If the error flag is set, return 0 and terminate these steps.

返回HTTP状态code。

Return the HTTP status code.

还要注意： 错误标志表示某种类型的网络错误或要求流产。它最初是取消设置，并在完成状态被使用。

NOTE also: The error flag indicates some type of network error or request abortion. It is initially unset and is used during the DONE state.

从我因此明白了，这code检应该可以解决这个问题：

From what I understand therefore, this code check should fix the issue:

    if (xhr.status == 0)
        alert('error');