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by slivanes 2310 days ago
Back before XmlHttpRequest, you could "poll" for server information using a hidden IFRAME.

XmlHttpRequest + JSON formalized this type of data transfer.

1 comments

Was going to mention this, it was pretty popular for those of us building corp intranet applications at the time. Not a lot of people used it for generally available web application but there where a few. Several of the web chat applications of the time used it extensively.