Start by clarifying requirements and edge cases, then outline a clean architecture using event delegation and a central state object. Walk through the implementation step-by-step, emphasizing performance, accessibility, and how you would test and extend it.
Pro tip: Mention that you would use event delegation on a container to handle all toggle and load-more clicks, which improves performance and simplifies dynamic row management. Also, discuss how you would persist wishlist state using localStorage or a backend API to align with Amazon's customer-centric features.
Ask questions to confirm initial row count, max rows, toggle behavior, and whether state should persist. Identify edge cases like rapid clicking, loading beyond max, and accessibility needs.
Define a central state object to track total rows, wishlist items, and loading status. Plan how to render rows dynamically and update the count efficiently.
Write functions to create rows, toggle wishlist state, and append more rows. Use event delegation on a parent container to handle clicks for both toggle buttons and the load more button.
Ensure the load more button disables at 30 rows, prevent duplicate event listeners, and use efficient DOM updates. Consider debouncing rapid clicks and maintaining accessibility with ARIA attributes.
Outline a testing strategy (unit, integration, manual) and discuss trade-offs like client-side vs server-side state, performance implications, and scalability.
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.