What are components in Angular?

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Components are the key features of Angular. They are the main building blocks of an Angular application. Angular components make your complex application into reusable parts which you can reuse very easily.

You can easily create components by using Angular CLI.

Syntax:

ng generate component component_name
Or
ng g c component_name

In Angular, components are the fundamental building blocks of an application’s UI (User Interface). They are responsible for encapsulating the logic, structure, and styling of a particular part of the user interface. Each component typically consists of three main parts:

  1. Template: This defines the component’s UI, typically written in HTML with Angular-specific template syntax, which allows for data binding, directives, and other features.
  2. Class: This is a TypeScript class that contains the component’s logic, properties, and methods. It interacts with the template through properties and methods defined in the class.
  3. Metadata: This is usually represented by the @Component decorator in Angular. It provides additional information about the component, such as its selector (how it can be used in other templates), its template or templateUrl (where to find the template), and other configuration options like styleUrls for specifying component-specific stylesheets.

Components in Angular follow a hierarchical structure, where smaller components can be nested within larger ones, allowing for a modular and reusable design approach. They facilitate the development of complex applications by breaking them down into smaller, manageable parts, each responsible for a specific feature or functionality.

In summary, a concise answer to the question “What are components in Angular?” would be:

“Components in Angular are the basic building blocks of the user interface. They consist of a template (HTML with Angular-specific syntax), a class (TypeScript code defining the component’s logic), and metadata (such as selectors and styles) provided by decorators. Components encapsulate specific parts of the UI and promote modularity and reusability in Angular applications.”