AJAX

Introduction

AJAX: Asynchronous JavaScript And XML.
AJAX is a web browser technology that uses existing standards such as JavaScript, XML, HTML, CSS, DOM and the XMLHttpRequest object.
Allows better, faster, more interactive (easier to use) web applications to be developed
Uses asynchronous data transfer (HTTP requests) to send and receive small amounts of data between a web browser and a web server. This occurs behind the scenes instead of reloading an entire web page each time a user makes a change.
XML is commonly used as the format for receiving server data, although any format including plain text can be used.