尽管我在后台运行挂起的 AJAX 请求，如何使 Web 浏览器完成加载过程？
我正在尝试实现一个简单的“comet”ajax长轮询机制（如此处所述）。
问题是，我无法弄清楚如何告诉浏览器就像已完成加载页面一样，尽管它有一个正在后台运行的待处理请求。 （一种
方法是使用网络套接字，但这太过分了。
I am trying to implement a simple "comet" ajax long-polling mechanism (as described here).
The problem is, I cannot figure out how to tell the browser to act as if it has finished loading the page, although it has a pending request running in the background. (The l
One way is using web sockets, but that's way much of an overkill.
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啊，老的“厄运的悸动者”:-)
有 关于此的另一个问题可能值得一读。它指的是 IFRAME，但很可能仍然相关。
我写了一篇关于 throbber 的帖子我正在研究 Kwwika，但我得出了一个不幸的结论：100% 摆脱它并不容易。
我认为 WebSockets 实际上并没有太大的杀伤力。使用 XMLHttpRequest 等的 Comet 并不是 Web 浏览器从根本上支持的标准。换句话说，他们并没有竭尽全力让创建长期存在的 HTTP 请求变得超级容易。 WebSocket 是一种标准化方法，正在缓慢但坚定地受到所有浏览器的支持。我希望他们能进入 IE10。现在，您可以查看类似 web-socket-js 的内容，这将确保 WebSocket 支持在 99% 的浏览器中。与任何类型的轮询解决方案相比，WebSocket 还提供更低的延迟和更少的资源密集度。
Ah, the old "throbber of doom" :-)
There's another question about this which is probably worth a read. It refers to IFRAMEs but it's most probably still relevant.
I wrote up a post on the throbber while I was working on Kwwika but I came to the unfortunate conclusion that's it's not very easy to 100% get rid of it.
I'd suggest that WebSockets aren't actually overkill. Comet using XMLHttpRequest etc. isn't a standard fundamentally supported by web browsers. In other words they don't go out of their way to make creating long-lived HTTP requests super-easy. WebSockets are a standardised approach that are slowly but surly becoming supported in all browsers. I'm hoping that they make it into IE10. For now you can look at something like web-socket-js which will ensure WebSocket support in 99% of browsers. WebSockets also offer lower latency and are less resource-intensive that any kind of polling solution.
您需要异步调用ajax http://api.jquery.com/jQuery.ajax/
You need async call to ajax http://api.jquery.com/jQuery.ajax/
好的，我已经设法解决了这个问题。出现“throbber of doom”的问题是因为我在 document.ready 函数下执行了 ajax 请求，如下所示：
这解决了它：
OK, I've sorta managed to solve this. The problem of the "throbber of doom" was caused because I executed the ajax request under the document.ready function like this:
This solved it: