What is the full form of AJAX

AJAX: Asynchronous JavaScript and XML

AJAX stands for Asynchronous JavaScript and XML. AJAX is a new technique for creating better, faster, and more interactive web applications with the help of XML, HTML, CSS, and Java Script.

AJAX allows multiple web pages to be updated one by one by exchanging the data with the web server in the background. Which means that the part of the web pages can be updated without refreshing the whole page again and again.

AJAX uses the mixture of both the following :

XMLHttpRequest Object: To request data from a web server, ajax uses a built-in XMLHttpRequest Object.
JavaScript and HTML DOM: To display or to use the data, ajax uses JavaScript and HTML DOM.

Technologies involved in AJAX:

HTML – It is used at the client side.
JavaScript – It is used to make the request.
CSS – It is also used at the client side.
XML – It is just a request formats.
JSON – It is also a request formats.
PHP – It is used at the server side.