中止jQuery getJSON XMLHttpRequest [英] Aborting a jQuery getJSON XMLHttpRequest

问题描述

原来这是一个Firebug bug的人工制品。 Ajax请求被取消，但Firebug继续将其报告为活动状态。详细信息这里。

Turns out this was an artefact of a Firebug bug. The Ajax request was cancelled, but Firebug continued reporting it as active. Details here.

我一直在运行XMLHttpRequests，我需要能够中止在某些情况下它们。

I have long running XMLHttpRequests and I need to be able to abort them under certain circumstances.

我以正常方式设置请求：

I set up the request in a normal way:

ajax = $.getJSON(url + "?updates", function(data) { ...; });

后来我想中止这个请求，看起来很简单：

Later on I want to abort this request, seems straightforward:

ajax.abort();

当我查看Firebug时，我发现它仍在运行...

When I look in Firebug however, I see it is still running...

我在尝试中止它之前调试ajax的值。它确认它的值是和XMLHttpRequest（readyState为0）。

I console.log out the value of ajax just before I try and abort it, it confirms that its value is and XMLHttpRequest (with a readyState of 0).

对abh（）在XMLHttpRequest上的触发方式和时间是否有限制？

Are there restrictions on how and when abort() fires on an XMLHttpRequest?

推荐答案

另一个伟大的有关处理此问题的文章，请访问： http://www.bennadel.com/blog/1500-Catching-Timeout-Errors-With-jQuery-Powered-AJAX.htm 。

Another great article on handling this is found here: http://www.bennadel.com/blog/1500-Catching-Timeout-Errors-With-jQuery-Powered-AJAX.htm.

I只是将我的.getJSON请求转换为.ajax并添加了超时/错误处理。

I simply converted my .getJSON request to .ajax and added the timeout/error handling.

谢谢！

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