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'''Ajax''' (also '''AJAX'''; /ˈeɪdʒæks/) is a group of interrelated [[Web development]] techniques used on the [[client-side]] to create [[Asynchronous I/O|asynchronous]] [[Web application|web applications]]. 

== About Ajax ==

With Ajax, web applications can send data to and retrieve from a [[web server]] asynchronously (in the background) without interfering with the display and behavior of the existing page. 

The name Ajax short for "asynchronous [[JavaScript]] and [[XML]]".

Despite the name, Ajax requests may be synchronous, and may use some data format other than XML, notably [[JSON]].

Ajax is not a single technology, but a group of technologies.

[[HTML]] and [[Cascading Style Sheets|CSS]] can be used in combination to mark up and style information. 

The [[Document Object Model|DOM]] is accessed with JavaScript to dynamically display -- and allow the user to interact with -- the information presented. 

== Retrieving data using JavaScript and XMLHttpRequest == 

JavaScript and the XMLHttpRequest object provide a method for exchanging data asynchronously between browser and server to avoid full page reloads.

== See also ==

* [[Client-side]]
* [[Dynamic web page]]
* [[Document Object Model]]
* [[JavaScript]]
* [[Server-side]]
* [[XMLHttpRequest]]

== External links ==

* [http://en.wikipedia.org/wiki/Ajax_%28programming%29 Ajax (programming)] @ Wikipedia