Introduction to JSON

 A.XML

XML stands for Extensible Markup Language. It's a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.

XML is used to store and transport data between systems, and it's often used for descriptive purposes. It's similar to HTML, but whereas HTML is used to display data, XML is used to describe the structure and content of the data.

B.JSON

JSON stands for JavaScript Object Notation. It's a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate.

JSON is a text format that is completely language independent, but it is often used with JavaScript, as the name suggests. It's commonly used for transmitting data between a server and a web application, as an alternative to XML.

C.AJAX

AJAX stands for Asynchronous JavaScript and XML. It's a technique for creating interactive web applications that allows the web page to be updated asynchronously by exchanging small amounts of data with the server behind the scenes, without the need for a full page refresh.

AJAX is not a programming language, but rather a set of web development techniques that use several different technologies together.