First of all - I have read teens of SO similar questions and other googled pages / blogs.
There was many ways to make cross-domain communication work, but is there something that lets me do that, when I'm unable to modify page (for example http://www.imdbapi.com/?t=True%20Grit&y=1969 ) that I want call?
Can I use postMessage solution (this method looked best to me) without ANY modification in http://www.imdbapi.com/?t=True%20Grit&y=1969 ? It looks like it has no helper page (one of the methods).
I don't want to use any 3rd party library / php script / etc - just pure html and javascript - is it possible to call such a 'immutable' page? ... and parse it on my own page (simple iframe is ofc not enough)
Please help - my huge research leave me with nothing
ok, here's the thing. what that did is requested data from the same domain. inter-subdomain and subdomain-domain requests are not "same domain", just to make things clear. Since that page was "same-domain", it was possible without a helper.
AJAX does not allow cross-domain requests. as far as i know, there are methods that allow cross-domain requests (such as helper pages)
currently, jsonp is supported by jQuery and you can do it like this:
http://api.jquery.com/jQuery.getJSON/
look for in the page: "Loads the four most recent cat pictures from the Flickr JSONP API."
or see reference: