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Implementing AJAX Using ASP.NET 1.1
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03/15/2006 By Ian Suttle
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You've heard of it. It is the latest buzz term for web programmers these days. AJAX is an acronym that stands for Asynchronous JavaScript and XML. AJAX gains its popularity by allowing data on a page to be dynamically updated without having to make the browser reload the page. I will describe more about how AJAX works, and then go into some sample code to try out.
Is AJAX a new technology? Yes and no would both be incorrect answers. A proper answer would be a new application of current technologies, with emphasis on plurality. This list of technologies includes standard HTML controls, JavaScript, an XML HTTP component, and XML data structures.
The following is an outline of the sequence of events when using AJAX:
Web page is rendered
A trigger executes a JavaScript function call (i.e. onKeyUp, button click, setTimeout, page load, etc.)
JavaScript instantiates an XML HTTP object
XML HTTP object calls a remote page
Remote Page transforms an XML structure using XSLT and returns the result
JavaScript accepts the results and applies it to the page
Tada! No page reload, just magical dynamic data
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