I tried to use standard ajax method, to retrieve page content from an URL, however, if I’m not putting this ajax.htm on a server, e.g apache, and AJAX won’t emit.
And if I place it in a http server, trying to access the Internet, it was canceled deliberately, here a screenshot from chromium:

That’s weird? Just posting to a virtual machine (192.168.56.212) with AJAX.
P.S: Accessing localhost with AJAX works anyway.
You cant. The browser will usually prohibit connections to any other domain than the one from which the page came. This is called the
same origin policy. There is a way to get around this for some URLs called JSONP, but that only works for sites that use it.