angular-directives

Custom Angular directives encapsulate DOM manipulation logic into reusable patterns. Use attribute directives to modify element appearance or behavior, or structural directives for portals and content insertion points to extend DOM capabilities.

The directive composition API combines multiple host directives into a single component to compose reusable behaviors. Use it when you need to apply shared DOM behaviors across components and enable cross-component communication through exposed directive outputs.

Yes, implementing reusable Angular directives requires Angular v20+ with directive APIs, including signals and dependency injection features. A TypeScript-enabled project is also required to properly build and reuse the directive patterns.

Attribute directives modify element appearance or behavior directly, while structural directives handle portals, overlays, and content insertion points. Both encapsulate DOM manipulation into reusable patterns for extending Angular component architecture.

Expose directive outputs to enable cross-component communication by leveraging host directives and the directive composition API. This allows reusable DOM behaviors to emit events that parent components can listen to and react upon.

Host directives compose reusable behaviors directly on Angular components. By using the directive composition API, you combine multiple directives into a single component, extending DOM behavior without modifying the original component template.