As of today, you can build your Page tab apps using iframes rather than FBML. Previously we were forced to use FBML and FBJS which were Facebook’s sanitised and cut-down versions of HTML, Javascript and CSS - the building blocks of the web. There were restrictions on what we could do, and apps were breaking frequently due to relying heavily on Facebook’s ever-changing codebase. With this new upgrade, we will now see more flexibility and better communication across Facebook Pages.
More Flexibility
Using iframes means you can now include on Facebook Page tabs all the functionality that we have always built in the main app canvas pages.
This also means that the way developers build applications on Page tabs will be consistent with the dominant way they are built on canvas pages, which should simplify development processes (and reduce support costs). It gives more flexibility to developers to build entire apps that can work within tabs, and potentially customise behaviour to different Pages.
Better Communication
Starting today, you can also navigate and interact with other areas of Facebook as your Page. This means you can choose to receive notifications about fan activity, Like and comment on other Pages as your Page, and get your own Newsfeed where you can engage with and share the latest and most important news with other Pages you like.
By March 11, 2011, you will no longer be able to create new FBML apps and Pages will no longer be able to add the Static FBML app.
iPlatform is now building new types of apps using iframes in Page Tabs.
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