Need help with AJAX comments.

I am creating a script that allows members to post comments, and I would like to do so through the use of AJAX. What I need help with is how to only load new comments from the database, while preserving what is already displayed.

Basically you just need a page to call from client-side, that, given the correct parameters (entry id) and context (session) will respond with your data; either in JSON format, plain text or XML format.

echoSwe, I know how to retrieve the information, but what I'm asking is what is a good way to retrieve comments (since last reload in AJAX). Basically, I need a way to send back along with the comments a timestamp, have the page read the timestamp, and make a new AJAX call sending out the timestamp (so the php knows what comments have been posted since last reload).

Well, you could simply give your page an xml snippet:
Then on your client side, initiate an XML parser within a function that returns the parser object - as described for Firefox: http://www.pcquest.com/content/codin.../104080302.asp
and for IE: http://www.xmlfiles.com/dom/dom_parser.asp
- because once you got your parser object, you can use the DOM to parse it.

The timestamp can be read off the attribute on the top. The xml-file is automatically generated from the ASP.Net page or PHP page that you place your calls to... The timestamp is updated every request and also sent along when placing a request.

Did this help?

I believe this should do it, thanks. I don't have time to test it now though, but it appears as though it should work. I'll let you know once I get a chance to test it.