我要扩展的AJAX功能，以便每当它被称为的图像出现在页面上，表示有内容加载。

I want to extend the ajax function so that whenever it is called an image appears on the page that indicates there is content loading.

我可以用prefilters作为此网页。 http://api.jquery.com讨论/延长-AJAX / 来显示图像，但我怎么能隐藏图像，一旦请求完成？

I can use prefilters as discussed on this page http://api.jquery.com/extending-ajax/ to show the image but how could I hide the image once the request is complete?

推荐答案

请看看这里：的全局AJAX事件处理

这些使它容易实现加载图像，每当一个Ajax请求是通过jQuery的发送。没有必要延伸

These make it trivial to implement a loading image whenever an ajax request is sent through jQuery. No extending needed.