Angular Components Overview & Examples

Angular is a powerful front-end framework for developing single-page web applications. It is known for its robust architecture, powerful features, and excellent performance. One of the core concepts of Angular is components. Angular components are reusable building blocks that can be used to create complex UIs. In this article, we will provide an overview of Angular components and provide some examples to help you get started.

What are Angular Components?

Angular components are a type of directive that controls a section of the UI. Components control a view, which is a section of the screen that displays data and responds to user actions. Components can be reused in different parts of the application, making them a powerful tool for building complex UI layouts.

Angular Components Example

Let’s take a look at an example of an Angular component. Consider the following code:

import { Component } from ‘@angular/core’;

selector: ‘my-component’,
template: `



styles: [`
div {
background-color: lightgray;
padding: 10px;
export class MyComponent {
title = ‘My Component’;
body = ‘This is the body of my component.’;

This is a simple component that displays a title and a body of text. The `@Component` decorator defines the component’s metadata, including its selector, template, and styles. The `selector` property defines the HTML tag that will be used to include the component in a template. The `template` property defines the HTML that will be rendered when the component is included in a template. The `styles` property defines the CSS styles that will be applied to the component.

How are Angular Components Used?

Angular components can be used in templates by including the component’s selector as a tag. For example, to use the `MyComponent` component from the previous example, we could include the following code in a template:



When the template is rendered, Angular will replace the `my-component` tag with the HTML defined in the `template` property of the `MyComponent` component. The `title` and `body` properties of the component will be bound to the corresponding elements in the template.

What are the Benefits of Using Angular Components?

There are several benefits to using Angular components in your applications:

1. Reusability: Components can be reused in multiple parts of the application, reducing development time and promoting code consistency.

2. Modularization: Components separate UI logic from business logic, making it easier to maintain and update the application.

3. Encapsulation: Components have their own template, styles, and logic, which helps to isolate and manage complexity.

4. Dependency Injection: Components can make use of Angular’s dependency injection system to get access to services and other components.


Q. Can components use services?

Yes, components can use services to perform business logic and data retrieval. Services can be injected into components using Angular’s dependency injection system.

Q. Can components be nested?

Yes, components can be nested inside other components to create complex UI layouts.

Q. Can components communicate with each other?

Yes, components can communicate with each other using @Input and @Output properties, which allow data to be passed between components.

Q. Can I use third-party libraries with Angular components?

Yes, you can use third-party libraries with Angular components. Many popular libraries have Angular-specific wrappers or plugins that make it easy to integrate them into your application.

In conclusion, Angular components are a powerful tool for building complex UI layouts in Angular applications. They provide reusability, modularization, encapsulation, and dependency injection, making it easier to maintain and update your application. Hopefully, this article has provided a helpful overview of Angular components and some examples to get you started building your own components.

Similar Posts