URL adresa kod ajax poziva

dusans: pada mi na pamet neka skalamerija sa hash-om.

In a sense, calling pushState() is similar to setting window.location = "#foo", in that both will also create and activate another history entry associated with the current document

The new URL can be any URL in the same origin as the current URL. In contrast, setting window.location keeps you at the same document only if you modify only the hash.
You don't have to change the URL if you don't want to. In contrast, setting window.location = "#foo"; only creates a new history entry if the current hash isn't #foo.
You can associate arbitrary data with your new history entry. With the hash-based approach, you need to encode all of the relevant data into a short string.
If title is subsequently used by browsers, this data can be utilized (independent of, say, the hash).
Note that pushState() never causes a hashchange event to be fired, even if the new URL differs from the old URL only in its hash.