AJAX

AJAX is an client-sided web development technique that is used to produce an interactive Web Applications.

AJAX is a way of develoing an application that combines all the functions

.   XHTML and CSS standards based presentation.

.   Interaction with a page through an document Object Model.

.   Data Interchange with XML and XSLT.

.   An Asynchronous data retrieval with XML HTTP Request.

Asynchronous Methods in AJAX

Making Synchronous AJAX Calls

Asynchronous AJAX calls are used to write a waits for a response before moving on to a next statements.

If a user is using a JQuery then it is easy to use by setting as async:false .

Make Functions Accept Callbacks

A much better solutions is to make your functions accept callbacks and rewrite your code around.

Var result = foo();
foo(function(result) {
// write your code// });

Deferred Objects

These are the times When directly passd=ing a callback is not ideal for any application.
Deferred objects make use of a then() method when your passinga callback so that it will execute when a value becomes available.

AJAX is an combination of all technologies is not a single technology.HTML and CSS mark up and style the information and then a cross-platform and an object-interaction language is accessed typically by using JavaScript.

JavaScript in turn dynamically displays information which allows the user to interact with it.

.   Asynchronous communication is the best advantage of an AJAX.

.   AJAX covers a broad range of Web technologies that are used to Built a WebApplication.

.   Data Interchange with XML and XSLT.

.   An Asynchronous data retrieval with XML HTTP Request.