Since my last AJAX project I've increasingly been wondering about the "ideal" output format for the AJAX response. Once you've succesfully fired an AJAX request, what sort of response should the server give? An XML document? An HTML snippet? A JSON string which is converted to a JavaScript object? Or something else? In this entry I'd like to discuss the three formats, with examples, and ask you which format you've used in your practical AJAX applications.

(This article has been translated into Spanish.)

continue reading

Quite unexpectedly I was able to add a site to my portfolio that had been shelved for nearly two years: the new website of the Concertgebouw in Amsterdam. In addition I'd like to draw attention to the new KLM site, in which I had a modest involvement and which contains an interesting CSS/JavaScript feature that I haven't yet seen anywhere else.

continue reading

In the past two weeks I've again created an Ajax-driven interface, and as usual I discovered quite a few interesting XMLHTTP bugs and problems. This entry contains three Explorer and one Safari bug, and it talks about cloning nodes from HTML to XML, from XML to XML, appending HTML that contains a form, and extremely agressive caching.

continue reading