javascript - how to notify user when user has browser open? -


you notification new answers , stuff in so. (the red mark next stackexchange @ top)

the notification mark appears if user doesn't interact browser(no reloading).

how can implement such feature?

i research topics websockets, long polling, signalr, nodejs examples of implementations of similar features.

ex: http://signalr.net/

http://en.wikipedia.org/wiki/push_technology


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