Components

Angular components play a crucial role in building Angular applications.Each component represents a part of larger web page. Organizing an application into components makes the project structure more modular and maintainable by splitting the code into smaller, manageable parts.

An Angular component is essentially a TypeScript class with behaviours such as Handling user input and fetching data from the server and decorated with the '@Component decorator'. This decorator provides metadata that tells Angular how to treat the class as a UI component rather than a regular TypeScript class.

The metadata includes:

• A selector property, which defines how the component is used in HTML.
• A template or templateUrl property, which defines the HTML structure to render in the DOM.
• Optionally, styles or styleUrls properties, which define the CSS associated with the component.

While Angular supports inline templates and styles, it is generally recommended to use external files for better code organization, readability, and maintainability. External templates and styles also enable better separation of concerns, making it easier to collaborate in teams and scale large applications.

Standalone Components:

A modern and recommended way to define an Angular component is by using the standalone: true property within the '@Component decorator'. This makes the component self-contained and independent, eliminating the need to declare it within an '@NgModule' or include it in the imports array of a module.

For new Angular developers, writing all the boilerplate code required by traditional NgModules can be overwhelming. Standalone components simplify this process by allowing components to be used directly with minimal configuration.

Although using standalone components may result in more imports in some cases, they offer a cleaner and more modular approach, making them easier to understand and work with—especially when learning Angular.

In standalone components in Angular, when you want to display a child component's UI within a parent component's template, you must first import the child component in the parent's imports array. After that, you can use the child component's selector (defined in the '@Component decorator') directly in the parent's HTML template.

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