Angular is a powerful framework that has revolutionized web development. Developed by Google, Angular is an open-source JavaScript framework designed for building dynamic, single-page applications. It is based on the Model-View-Controller (MVC) architecture, which allows developers to separate the application logic from the presentation layer.

Angular's first version known as AngularJS (Angular 1.x) was built using Javascript. Later Angular 2 was released in 2016 and was a complete rewrite of AngularJS. It was built using TypeScript, a superset of JavaScript, and introduced many new features and improvements, including a more efficient change detection mechanism, a modular architecture, and better performance. Angular 2 also introduced the concept of components, which are now a core part of the framework.

Angular is a complete solution for building complex web applications that are responsive, fast, and easy to maintain. It provides a set of tools and features that make web development easier and more efficient. Some of the key features of Angular include data binding, dependency injection, directives, and testing support.

Data Binding

Data binding is a powerful feature of Angular that allows developers to bind data between the model and view layer. This means that any changes made to the data in the model layer are automatically reflected in the view layer and vice versa. This eliminates the need for developers to write complex code for updating the user interface manually.

Dependency Injection

Dependency injection is another important feature of Angular that simplifies the process of managing dependencies between different components of the application. With dependency injection, developers can define dependencies in one place and reuse them throughout the application.

Directives

Directives are a set of instructions that tell Angular how to modify the Document Object Model (DOM) when the application is running. They are used to create custom HTML tags, attributes, and classes that can be used to add functionality to the application.

Testing Support

Angular provides a built-in testing framework that allows developers to write unit tests for their code. This ensures that the code is working as expected and helps to catch bugs early in the development process.

Overall, Angular is a powerful framework that offers a complete solution for building modern, dynamic web applications. Its features and tools make web development easier and more efficient, allowing developers to focus on creating great user experiences rather than writing complex code.