Ajax是否对服务器进行实际的GET调用，如果是，为什么它不会出现在Firebug上？

I have a LAMP setup on my Ubuntu and I am trying to connect to print it out in an unordered list using Ajax. It does not, however print out anything and I don't see any calls to server on my Firebug.I have a LAMP setup on my Ubuntu and I am tryin