From Forum Nokia Wiki

AJAX (Asynchronous JavaScript And Xml) is a technique that combines JavaScript (or any ECMAScript compatible language), XML (or other transport format) and an object called XMLHttpRequest that allows the browser to send asynchronous calls to the server without refreshing the page.

While the request is going to the server, the user can continue using the page for reading or selecting things, so delays are no more a feature of browsing.

Sites created using AJAX offer also the possibility to auto-fill input fields based on predictive text or previous user entries.

AJAX is the future of mobile browsing as you can create rich mobile applications for browsers making a richer experience to the user.

The latest version of Nokia Browser supports AJAX development.

See also:

• Flash Lite
• On Device Portal

More information on http://en.wikipedia.org/wiki/AJAX