“AJAX - ASYNCHRONOUS JAVA SCRIPT AND XML”
Tthe art of exchanging data with a server, and update parts of a web page -
without reloading the whole page.
It s a group of interrelated web development techniques used on the client-side to
create interactive web applications.
With Ajax, web applications can retrieve data from the server asynchronously in
the background without interfering with the display and behavior of the
The use of Ajax techniques has led to an increase in interactive or dynamic
interfaces on web pages. Data are usually retrieved using the XMLHttpRequest
AJAX applications are browser- and platform-independent!
Examples of applications using AJAX: Google Maps, Gmail, Youtube, and
AJAX is based on internet standards, and uses a combination of:
XMLHttpRequest object (to exchange data asynchronously with a server)
CSS (to style the data)
XML (often used as the format for transferring data)
Styles define how to display HTML elements
Styles were added to HTML 4.0 to solve a problem
A CSS rule has two main parts: a selector, and one or more declarations:
lector is normally the HTML element you want to style.
Each declaration consists of a property and a value.
CSS Example :
Three Ways to Insert CSS