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ANGULAR Tutorial
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Creating and using custom components

Angular’s component-based architecture empowers developers to create reusable and modular elements known as components. These custom components not only enhance code maintainability but also contribute to a more structured and scalable application development process.

Component Generation

  • Use Angular CLI to generate a new component: ng generate component component-name
  • This command creates the necessary files (HTML, CSS/SCSS, TypeScript, and test files) for your component.

2. Component Structure:

  • Customize the generated files to suit your component’s functionality and appearance.
  • Define the component’s logic in the TypeScript file, the structure in the HTML file, and styles in the CSS/SCSS file.

3. Input and Output Properties:

  • Utilize @Input and @Output decorators to enable communication between components.
  • @Input allows data binding from a parent component to a child component.
  • @Output emits events from a child component to a parent component.

Using Custom Components:

1. Reusability:

  • Incorporate custom components across your application by simply adding their selectors to HTML templates.
  • Leverage their reusability to maintain consistency and efficiency in your application’s design and functionality.

2. Component Interactions:

  • Utilize @Input properties to pass data from parent components to child components.
  • Use @Output properties to emit events from child components to parent components.

3. Encapsulation and Modularity:

  • Leverage Angular’s encapsulation to encapsulate styles and functionality within components, avoiding conflicts and ensuring modularity.
  • Encourage the use of custom components to break down complex UIs into manageable, reusable parts.

SEO Considerations for Custom Components:

1. Semantic HTML:

  • Ensure custom components use semantic HTML elements, aiding search engines in understanding the structure and content.

2. Accessibility and Performance:

  • Optimize custom components for accessibility by including proper ARIA attributes and ensuring a smooth user experience.
  • Enhance performance by minimizing DOM manipulation and utilizing Angular’s change detection strategy effectively.