This is an Ajax Demo.
Ajax is really not a thing.
Someone decided to give a technical name to a simple process that is present in
all of the browsers. There is something available to javascript called HTTPRequest,
and as the name suggests, it lets you create an HTTP request after tha page
has finished loading. This allows you to obtain data from a server without
reloading the web page.
Keeping along the lines of the other demos here, this particular example
uses a web service to obtain the data for the Ajax process.
Some would say this is not a very good way to do this.
I say it is because this is a pretty common thing that many apps would
want to use and they may not be web apps, so I deem that this functionality
should be in a web service so there is no need to duplicate code all over
the place or an imported package in all the projects, but rather simple
web service calls.
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