Final answer:
AJAX is a technique used in web development to create interactive and dynamic web pages. It allows data to be retrieved from a server without refreshing the entire page. JavaScript, XML, and JSON are key components in AJAX.
Step-by-step explanation:
AJAX (Asynchronous JavaScript and XML) is a technique used in web development to create interactive and dynamic web pages. It allows data to be retrieved from a server without needing to refresh the entire page. This improves the user experience by making the website more responsive.
The name AJAX is a combination of different web technologies. JavaScript is the programming language used to make the web page dynamic and interact with the server. XML is a data format that is often used to exchange data between the server and the web page. However, JSON (JavaScript Object Notation) is now more commonly used instead of XML.
For example, when you fill out a form on a website and click submit, AJAX can be used to send the form data to the server without refreshing the entire page. The server can then process the data and send back a response, which can be displayed on the web page in real-time.