Angular Material Interview Questions and Answers for 7 years experience

1. What are the core components of Angular Material?

   • Answer: Angular Material's core components include buttons, inputs, cards, dialogs, menus, toolbars, progress bars, and data tables. These provide a consistent and accessible UI across various applications.

2. Explain the difference between `cdkOverlay` and `MatDialog`.

   • Answer: `cdkOverlay` is a lower-level API that provides the building blocks for creating overlays. `MatDialog` is a higher-level component built on top of `cdkOverlay`, offering a ready-made dialog implementation with convenient features like opening, closing, and managing dialog instances. Use `cdkOverlay` for more customized overlay solutions, and `MatDialog` for simpler dialog needs.

3. How do you implement accessibility features in Angular Material components?

   • Answer: Angular Material components are built with accessibility in mind. Ensure proper ARIA attributes are used (e.g., `aria-label`, `aria-describedby`), provide sufficient color contrast, use keyboard navigation effectively, and follow WCAG guidelines. Test your application with assistive technologies like screen readers.

4. Describe your experience with Angular Material's theming system.

   • Answer: I have extensive experience customizing Angular Material themes using Sass variables and pre-defined themes. I understand how to create custom color palettes, modify typography, and adjust component styles to match specific design requirements. I've worked with both light and dark themes and implemented theming strategies for responsive design.

5. How do you handle complex layouts using Angular Material?

   • Answer: Angular Material provides components like `mat-grid-list`, `mat-card`, and flexible layout options with `flex-box` and CSS Grid. I use these components and layout techniques to create responsive and organized layouts, adapting them to different screen sizes and user preferences.

6. Explain your approach to optimizing Angular Material applications for performance.

   • Answer: Performance optimization involves techniques like lazy loading modules, using OnPush change detection strategy, minimizing unnecessary DOM manipulations, leveraging Angular's built-in change detection mechanisms, using virtual scrolling for large lists, and optimizing images. I also profile my application using tools like the Angular DevTools to identify and address performance bottlenecks.

7. How do you integrate Angular Material with other libraries or frameworks?

   • Answer: I have experience integrating Angular Material with various libraries and frameworks, such as RxJS for reactive programming, NgRx for state management, and charting libraries like Chart.js. I understand how to manage potential conflicts and ensure seamless integration between these technologies.

8. What are some common challenges you've faced while working with Angular Material, and how did you overcome them?

   • Answer: Challenges include resolving CSS conflicts, optimizing performance for large datasets, and customizing complex components. I addressed these using techniques like CSS encapsulation, component optimization, and creating custom components where necessary. Debugging and thorough testing are crucial in handling these situations.

9. Describe your experience with Angular Material's data table component.

   • Answer: I've extensively used `MatTable` to display and manage large datasets efficiently. I am proficient in features like pagination, sorting, filtering, and row selection. I understand how to work with different data sources, including backend APIs and local arrays.

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