Angular Interview Practice

The Virtual Scroll feature is a powerful optimization technique used in Angular for efficiently rendering large lists in the user interface. This feature enhances performance by limiting the number of items rendered in the DOM at any given time. Instead of displaying all list items simultaneously, which can lead to performance issues such as slow rendering times and a sluggish user interface, Virtual Scroll only renders the items that are currently visible in the viewport. As the user scrolls, items that go out of the view are removed from the DOM, and new items are rendered as needed.

This approach reduces memory consumption and improves response times because the browser is only working with a small subset of elements instead of the entire dataset. The result is a smooth scrolling experience even with extensive lists. This characteristic is pivotal when dealing with very large datasets, making Virtual Scroll a beneficial feature for Angular applications.

Other options do not accurately reflect the functionality of Virtual Scroll, with the performance enhancement being its key highlight.