What are the most important features of AngularJS?

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The most important features of AngularJS are:

  • Model
  • View
  • Controller
  • Directives
  • Scope
  • Services
  • Data Binding
  • Filters
  • Testable

When discussing the most important features of AngularJS in an interview, it’s essential to highlight its key strengths and capabilities. Here are some important features of AngularJS:

  1. Two-way data binding: AngularJS facilitates automatic synchronization of data between the model and the view, eliminating the need for manual DOM manipulation.
  2. Directives: Directives are markers on a DOM element that tell AngularJS’s HTML compiler to attach a specified behavior to that DOM element or transform the DOM element and its children.
  3. Dependency injection: AngularJS has a built-in dependency injection subsystem that helps to make components more modular, reusable, and easier to test.
  4. MVC (Model-View-Controller) architecture: AngularJS follows the MVC design pattern, which separates an application into three interconnected components: Model (data), View (UI), and Controller (business logic).
  5. Templating: AngularJS uses HTML as a declarative language to define the UI of an application. It allows developers to extend HTML vocabulary with new attributes called directives.
  6. Testing support: AngularJS is designed with testability in mind. It comes with built-in support for unit testing and end-to-end testing, making it easier to write and maintain tests for AngularJS applications.
  7. Routing: AngularJS provides a robust routing mechanism that allows developers to create single-page applications with multiple views and navigate between them without reloading the entire page.
  8. Services: AngularJS provides a set of built-in services (such as $http for AJAX requests, $location for URL manipulation, etc.) that can be injected into components to perform common tasks.
  9. Modular structure: AngularJS encourages a modular approach to building applications by allowing developers to break down their codebase into reusable components, modules, and services.
  10. Extensibility: AngularJS is highly extensible, allowing developers to create custom directives, filters, and services to meet the specific requirements of their applications.

In an interview, demonstrating an understanding of these features and their significance in building robust, maintainable, and scalable web applications with AngularJS would be crucial. Additionally, providing examples or discussing real-world use cases where these features are beneficial can further illustrate your proficiency with AngularJS.