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bvaughn/react-window

★ 17,176TypeScriptAudience · developerComplexity · 2/5Setup · easy

TLDR

React component library that renders very large lists and grids efficiently by only drawing the items visible on screen, keeping pages smooth even with thousands of rows or columns.

Mindmap

mindmap
  root((react-window))
    What it does
      Virtual scrolling
      Render visible items only
      Large list support
    Components
      FixedSizeList
      VariableSizeList
      FixedSizeGrid
    Use cases
      Big data tables
      Search result lists
      Admin dashboards
    Tech stack
      TypeScript
      React
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Code map

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filefunction / class

Things people build with this

USE CASE 1

Display a table with 10,000 rows in a React app without the page freezing or becoming slow.

USE CASE 2

Build a virtual-scrolling list of search results that stays smooth as the list grows.

USE CASE 3

Render a large data grid with many columns in a React admin dashboard without performance issues.

Tech stack

TypeScriptReactJavaScript

Getting it running

Difficulty · easy Time to first run · 5min
License not mentioned in the explanation.

In plain English

react-window is a component library for React, a popular JavaScript library for building user interfaces. It helps render large lists of data quickly and avoids the performance problems that usually appear when a page tries to put a lot of items on screen at once. The same approach also applies to tabular data, meaning grids and tables with many rows or columns. You would reach for react-window any time you need to display thousands of rows or list items in a web app without the page becoming sluggish. According to the README, it is used in projects such as React DevTools and the Replay browser. The README does not provide further architectural detail in the portion shown, so a fuller explanation is not possible from the provided data alone.

Copy-paste prompts

Prompt 1
Using react-window, write a React component that renders a list of 50,000 items with a fixed row height and smooth scrolling.
Prompt 2
Show me how to use react-window's VariableSizeList to render list items of different heights.
Prompt 3
How do I add infinite scroll to a react-window FixedSizeList so more items load as the user scrolls down?
Prompt 4
Give me an example of a react-window FixedSizeGrid for displaying a spreadsheet-like table with many rows and columns.
Prompt 5
How do I integrate react-window with react-virtualized-auto-sizer to make the list fill its container?
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