AngularJS is an open-source JavaScript framework used to build rich and extensible web applications. It is developed by Google and follows the MVC (Model View Controller) pattern. It supports HTML as the template language and enables the developers to create extended HTML tags which will help to represent the application’s content more clearly. It is easy to update and receive information from an HTML document. It also helps in writing a proper maintainable architecture which can be tested at a client-side.

AngularJS is a JavaScript-based open-source front-end web application framework developed and maintained by Google. It is designed to facilitate the development of single-page applications (SPAs) by providing a structured framework for building dynamic and interactive web applications. AngularJS uses declarative programming and follows the Model-View-Controller (MVC) architectural pattern to help developers organize and manage their code.

Key features of AngularJS include two-way data binding, dependency injection, and the use of directives. Two-way data binding allows automatic synchronization of data between the model and the view, while dependency injection enhances modularity and testability. Directives are custom HTML elements or attributes that extend the functionality of HTML, enabling developers to create reusable and modular components.

It’s worth noting that AngularJS is an older version of the Angular framework. The latest version, as of my knowledge cutoff in January 2022, is Angular (commonly referred to as Angular 2+ or simply Angular). Angular has undergone significant changes and improvements since AngularJS, offering a more modern and efficient development experience