How to create nested components in Angular
Łukasz Holeczek
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Creating nested components is fundamental for building scalable and maintainable Angular applications with proper component hierarchy. As the creator of CoreUI, a widely used open-source UI library, I’ve architected complex component structures in Angular applications over 25 years of development. From my expertise, the most effective approach is to use component selectors within templates and establish clear parent-child communication patterns. This creates reusable, modular components that follow Angular’s component-based architecture principles.
Use component selectors in parent templates to create nested component structures.
// parent.component.html
<div class="parent-container">
<app-child [data]="parentData" (childEvent)="handleChildEvent($event)"></app-child>
</div>
Here the parent component includes the child component using its selector app-child within its template. The square brackets [data] pass data down to the child via property binding, while parentheses (childEvent) listen for events emitted from the child component. This creates a clean parent-child relationship with proper data flow and communication.
Best Practice Note:
This is the same component architecture pattern we use in CoreUI Angular components for maintainable nested structures. Always define clear interfaces for component inputs and outputs, and avoid deep nesting beyond 3-4 levels to maintain readability and performance.
