jQuery AJAX
Asynchronous JavaScript and XML.
jQuery AJAX Introduction
AJAX is the art of exchanging data with a server, and updating parts of a web page - without reloading the whole page.
What is AJAX?
AJAX = Asynchronous JavaScript and XML.
In short; AJAX is about loading data in the background and display it on the webpage, without reloading the whole page.
Examples of applications using AJAX: Gmail, Google Maps, Youtube, and Facebook tabs.
jQuery and AJAX
jQuery provides several methods for AJAX functionality.
With the jQuery AJAX methods, you can request text, HTML, XML, or JSON from a remote server using both HTTP Get and HTTP Post - And you can load the external data directly into the selected HTML elements of your web page.