Ace the Angular Interview 2025 – Code Your Way to Success!

Virtual Scroll is an optimal feature in Angular applications designed to efficiently render large datasets. When dealing with extensive lists, rendering every item in the DOM can lead to performance issues, such as increased load times and sluggish interactions. Virtual Scroll addresses this by only rendering the items that are currently viewable in the viewport, which significantly reduces the number of DOM elements created and maintained.

In cases where applications feature large datasets, adopting Virtual Scroll allows for a seamless user experience as it enhances performance by minimizing memory footprint and improving rendering times. This is particularly important in user interfaces that need to maintain responsiveness even when dealing with many items, such as product listings, chat messages, or any scenario where a substantial amount of data is displayed.

Using Virtual Scroll for small lists, real-time updates, or sorted lists does not take full advantage of its capabilities. Small lists typically do not require optimization since they can be rendered efficiently without performance concerns. Similarly, while Virtual Scroll can help with real-time data display by updating the visible items efficiently, it is not specifically designed for real-time scenarios. Lastly, sorted lists can be efficiently managed without the necessity for Virtual Scroll, especially if their size remains manageable. Therefore, the use of Virtual Scroll is most beneficial in applications requiring the handling of large