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AJAX Interfaces for QDF
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06/02/2005, By Josh Reed
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This article will be much less formal than Article 1 or Article 2. I'll be discussing how I use AJAX to create highly-interactive web interfaces. I'll mainly be focusing on implementing these interfaces in straight (X)HTML but it should be fairly analagous for use in portlets and JSP pages.
Article 1 described one technique, the DIV swap, for creating interactive interfaces that don't require a page refresh for every action performed by users. This technique works well when you know the all of the content a priori. Some examples include slideshow-esque applications or if you have a bit of extra info that you want to show the user at their request. The problem is, the technique doesn't scale very well when there are a large number of hidden elements. The more hidden elements, the longer the download time (since the user has to download everything) and the longer the update time (because you are visiting many elements).
To combat the limitations of the DIV swap, I decided to explore how I could improve the interfaces with AJAX.
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