2.1 JavaScript

JavaScript is a programming language used primarily for creating interactive web pages and web applications. It is a high-level, interpreted language that is executed in a web browser, allowing developers to add dynamic functionality to their websites.

JavaScript was created by Brendan Eich at Netscape in 1995 and has since become one of the most popular programming languages in the world. It is known for its versatility and is used not only on the frontend of websites but also on the backend, in server-side applications, and in mobile app development.

JavaScript has a wide range of features, including support for object-oriented programming, functional programming, and asynchronous programming. It also has a large and active community of developers who create libraries and frameworks to make web development easier and more efficient.

Some popular uses of JavaScript include creating interactive forms, creating animations and visual effects, validating user input, and making AJAX requests to update content on a page without the need for a full page refresh.