How Facebook Beacon works.
November 26th, 2007
Jay Goldman has written up a great deconstruction of the Facebook Beacon Javascript. The Facebook developers have jumped through a few hoops to accommodate the XSS restriction in browsers while implementing Beacon.
Whatever about the privacy concerns that are currently being actively discussed, this non-trivial javascript pattern for sharing data will most likely be used in many other cross site integrations in the future – the absence of a requirement on the client website to implement a complex backend integration is quite compelling…
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