Forum: Rails Spinoffs (closed, excessive spam) permission denied when using prototype

Hi,

i am trying to call AJAX with domain address different than mine.
but i get an exception:
permission denied to call method XMLHTTPRequest.open

What's the solution?

You can't.  XMLHttpRequest cannot go across domains.  There is a W3C
recommendation on the table to provide this capability (server-side 
config
will be necessary).

http://www.w3.org/TR/access-control/

You can also use JavaScript/JSON with dynamic script tags to accomplish
cross-site requests, but it's a more limited scenario.  You can find 
some
resources by googling for ajax dynamic script tag.

-Fred

On Tue, Jul 1, 2008 at 6:13 AM, odelya <be.special@gmail.com> wrote:

>
> Hi,
>
> i am trying to call AJAX with domain address different than mine.
> but i get an exception:
> permission denied to call method XMLHTTPRequest.open
>
> What's the solution?


--
Science answers questions; philosophy questions answers.

You could not request ajax to different domain. This rule named SOP
(Same Origin Policy), and it was mentioned in manual like this:
"/remember that XHR is usually used on URLs from the same host that
originated the current page (this is the famous Same Origin Policy, or
SOP)/".

There are some solutions. You could request to file at your own domain,
and this file will request to content at target domain. Or, with JSONP.