I was watching the Network Monitor on Chrome's developer tool seeing how Facebook updates content throughout their news feed.
All of the responses from AJAX begin with the following:
for (;;);{"__ar":1,"payload":[]}
What is the for(;;);
piece doing?
Is this part of their custom JS framework? Or is this native and just something I am unfamiliar with?
It seems to be loading as a json object when I preview it.