The main goal of Angular is to create a modular architecture that allows developers to easily organize their code and create applications with a consistent, clean interface. The Angular library provides three types of modules: pipelines, directives, and components. All of the components in a project belong to the same module. A component class is responsible for maintaining the uniformity of the component code and encapsulating its business logic. It is used to write components that share common behaviors and dependencies.
A component is an essential building block of an Angular app. Each component has its own logic. A component controls one or more sections on a screen, which is known as a view. For example, a course list application might have two components: a Course Component and an App, each with their own UI. Each component class has a namespace, a selector, and an API to interact with the view. A component class bootstraps inside the main module, which bootstraps it.
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A component is a part of an Angular application. The component hierarchy is accessed through the root component. Each component has a corresponding HTML template and defines its own class. Angular uses an @Component() decorator to identify a class as a “component” and provide the appropriate HTML template. Decorators are used to modify JavaScript classes. The Angular framework defines how many decorators a component must have.
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