I want to refresh a page only when a new photo from the webcam has been uploaded

I have set up a webcam at work which uploads a photo and refreshes the page every 5 minute开发者_JS百科s. However when there is some activity it uploads a new pic every few seconds. How can I refresh the page everytime a new pic is uploaded? Thanks, Mike

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You must specify which technology you are using.Anyways if you used any modern technology then you can use timer which will refresh page after particular timestamp.

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This is not trivial. There are ways to do "long polling" with the server pushing data to a JavaScript running in the browser (the technology is named COMET) but that's a lot of work to set up. It will also require server side programming.

Is a frequent refresh every few seconds, or alternatively a JavaScript/Ajax based solution that makes a quick check every few seconds, totally out of the question?