Short for
Asynchronous JavaScript and XML, it
is a term that describes a new approach to using a number of existing
technologies together, including the following:
HTML or
XHTML,
Cascading Style Sheets,
JavaScript, the
Document Object
Model,
XML,
XSLT, and the
XMLHttpRequest
object. When these technologies are
combined in the Ajax model, Web
applications are
able to make quick, incremental updates to the user
interface without reloading the entire browser page.
[Source:
mozilla developer center]
Ajax is also seen written in all capital letters (AJAX).