What is the method for optimizing the rendering of long lists in Uniapp?

In Uniapp, rendering optimization for long lists can be achieved through the following methods:

1. Utilize virtual lists: Virtual lists are a technique that renders only the items visible in the viewing area, greatly reducing the performance consumption of rendering a page. In UniApp, virtual lists can be implemented using the uni-simple-virtual plugin.
2. Utilize the keep-alive caching component: For components that need to be frequently shown and hidden, you can use the tag to cache them, avoiding the performance cost of re-rendering and destroying components.
3. Avoid using a large number of computed properties and watchers: In long lists, avoid defining too many computed properties and watchers to minimize the number of page re-renderings.
4. Avoid frequent data updates: In long lists, try to minimize the frequency of data updates by optimizing performance through bulk updates.
5. Wrap list items with tag: In long lists, you can use the tag to group multiple list items together, reducing the number of actual DOM nodes on the page and improving rendering performance.

Here are some common optimization methods for rendering long lists in Uniapp. Developers can choose suitable optimization methods based on specific business needs and scenarios to improve page performance.