In the classic web development model, the response to a user action required HTTP request trip back to the server. However, this is done away with in AJAX model. The AJAX engine handles processes such as editing data in memory and simple data validation. When the engine requires something from the server while responding, the requests are made asynchronously using XML. So the user interacts with the application without any temporary suspension. The end result is that the user never sees blank browser window or an hourglass icon while waiting for the server to respond.
Avion Technology, Inc.
Web design and development