If the "part of the page" which needs to be updated can actually be a separate page embedded within the larger page, use an IFRAME. Its source (URL) can then be a server-side component producing the dynamic content, with a REFRESH set to your desired interval.

Alternatively...
There's multipart/x-mixed-replace. Here is some pretty good background and tutorial: server push with javascript Also read about COMET.

In reply to Re: How can I selectively refresh part of a page? by audreyt
in thread How can I selectively refresh part of a page? by jlistf

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