What is react-window and how does it help with virtualization?

What is react-window and how does it help with virtualization?

React-window is a library for efficiently rendering large lists and tabular data in React applications by only rendering visible items.

How does it compare to other libraries like react-virtualized?

React-window is a lighter alternative to react-virtualized, focusing on simplicity and performance, making it easier to use.

Can you give me an example of how to implement it?

Sure! You can use the FixedSizeList component to create a virtualized list. Here's a basic example:

import { FixedSizeList as List } from 'react-window';

const MyList = () => (
  <List
    height={150}
    itemCount={1000}
    itemSize={35}
    width={300}
  >
    {({ index, style }) => <div style={style}>Item {index}</div>}
  </List>
);

What are the performance benefits of using react-window?

The main performance benefit is that it only renders the items that are visible in the viewport, reducing the number of DOM nodes and improving rendering speed.