Hope this helps.

Ajax/Prototype/JSON PeriodicalUpdater: A working example – log update
on a background process


On Jun 23, 3:20 pm, Aamchi <aman.ra...@googlemail.com> wrote:
> Hi,
> I was wondering if Ajax.PeriodicalUpdater can detect if content has
> changed since the last update and if so trigger an event.
> So for example I have a scoreboard which fetches data every 5 seconds
> and displays this. I would be cool if there could be some kind of
> notification if content had changed. I know that the new content is
> stores in responseText but how can I compare it to the previous
> content...
> Thanks,
> Aman

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