Traditionally, Web-based user interfaces (including both pages and
applications) have required that each request made by the user forced
a page refresh, consuming a considerable amount of time and bandwidth.
Repeated page refreshes can result in a fairly slow and clunky Web
experience, even for users with the fastest broadband connection
available. These days, developers everywhere are flocking to new
tricks and techniques to drastically improve the performance and user
experience within Web-based applications. Web applications coded with
Ajax can allow data to be sent to the server asynchronously in the
background, while simultaneously updating various parts of the Web
page being viewed without a page reload. Ajax comprises a number of
objects and technologies. And despite the X initial in the acronym
Ajax, XML might never be used at all. The response sent back from the
browser could be one of various types or formats, including but not
limited to plain text, HTML, or XML. This article describes a compact
little JSP tag library that uses some external JavaScript to bring
easy-to-use Ajax support to your JSP pages: AjaxTags. More Information
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