Can the Jquery Cookie plugin only read cookies that it sets?

Question

Can the Jquery Cookie plugin only read cookies that it sets?

I am using an IFrame to display a page inside a jQuery Mobile page (date-role="page). The Iframe, uses a page that is asp.net forms authenticated. I want to check if the cookie exists and has not expired before navigating to the page. This way I can handle the login process only if the cookie does not exist. Is this possible?

I am trying to read the cookie as such

alert( $.cookie("example") );

Answer 1

Its a different domain. This wont always be the case however

This is the problem in this case - cookies can only be read from the same domain as they were set. This is a security feature which is present in every browser.