npm package: @logicsoftware/react-virtualized
Description: React components for efficiently rendering large, scrollable lists and tabular data
Author: Brian Vaughn
Latest version: 9.23.5

[<img src="https://cloud.githubusercontent.com/assets/29597/11737732/0ca1e55e-9f91-11e5-97f3-098f2f8ed866.png" alt="React virtualized" data-canonical-src="https://cloud.githubusercontent.com/assets/29597/11737732/0ca1e55e-9f91-11e5-97f3-098f2f8ed866.png" width="330" height="100" />](http://bvaughn.github.io/react-virtualized/)

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React components for efficiently rendering large lists and tabular data.
Check out [the demo](https://bvaughn.github.io/react-virtualized/) for some examples.
Join the official Slack chat at [react-virtualized.now.sh](https://react-virtualized.now.sh/).

### Sponsors
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[Learn more about becoming a sponsor!](https://opencollective.com/react-virtualized#sponsor)

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A word about `react-window`
---------------

If you're considering adding `react-virtualized` to a project, take a look at [`react-window`](https://github.com/bvaughn/react-window) as a possible lighter-weight alternative. [Learn more about how the two libraries compare here.](https://github.com/bvaughn/react-window#how-is-react-window-different-from-react-virtualized)

Getting started
---------------

Install `react-virtualized` using npm.

```shell
npm install react-virtualized --save
```

ES6, CommonJS, and UMD builds are available with each distribution.
For example:

```js
// Most of react-virtualized's styles are functional (eg position, size).
// Functional styles are applied directly to DOM elements.
// The Table component ships with a few presentational styles as well.
// They are optional, but if you want them you will need to also import the CSS file.
// This only needs to be done once; probably during your application's bootstrapping process.
import 'react-virtualized/styles.css'

// You can import any component you want as a named export from 'react-virtualized', eg
import { Column, Table } from 'react-virtualized'

// But if you only use a few react-virtualized components,
// And you're concerned about increasing your application's bundle size,
// You can directly import only the components you need, like so:
import AutoSizer from 'react-virtualized/dist/commonjs/AutoSizer'
import List from 'react-virtualized/dist/commonjs/List'
```

Note webpack 4 makes this optimization itself, see the [documentation](https://webpack.js.org/guides/tree-shaking/#mark-the-file-as-side-effect-free).

If the above syntax looks too cumbersome, or you import react-virtualized components from a lot of places, you can also configure a Webpack alias. For example:

```js
// Partial webpack.config.js
{
  alias: {
    'react-virtualized/List': 'react-virtualized/dist/es/List',
  },
  ...rest
}
```

Then you can just import like so:
```js
import List from 'react-virtualized/List';

// Now you can use <List {...props} />
```

You can also use a global-friendly UMD build:

```html
<link rel="stylesheet" href="path-to-react-virtualized/styles.css">
<script src="path-to-react-virtualized/dist/umd/react-virtualized.js"></script>
```

Now you're ready to start using the components.
You can learn more about which components react-virtualized has to offer [below](#documentation).

Dependencies
---------------

React Virtualized has very few dependencies and most are managed by NPM automatically.
However the following peer dependencies must be specified by your project in order to avoid version conflicts:
[`react`](https://www.npmjs.com/package/react),
[`react-dom`](https://www.npmjs.com/package/react-dom).
NPM will not automatically install these for you but it will show you a warning message with instructions on how to install them.

Pure Components
---------------

By default all react-virtualized components use [`shallowCompare`](https://facebook.github.io/react/docs/shallow-compare.html) to avoid re-rendering unless props or state has changed.
This occasionally confuses users when a collection's data changes (eg `['a','b','c']` => `['d','e','f']`) but props do not (eg `array.length`).

The solution to this is to let react-virtualized know that something external has changed.
This can be done a couple of different ways.

###### Pass-thru props

The `shallowCompare` method will detect changes to any props, even if they aren't declared as `propTypes`.
This means you can also pass through additional properties that affect cell rendering to ensure changes are detected.
For example, if you're using `List` to render a list of items that may be re-sorted after initial render- react-virtualized would not normally detect the sort operation because none of the properties it deals with change.
However you can pass through the additional sort property to trigger a re-render.
For example:

```js
<List
  {...listProps}
  sortBy={sortBy}
/>
```

###### Public methods

`Grid` and `Collection` components can be forcefully re-rendered using [`forceUpdate`](https://facebook.github.io/react/docs/component-api.html#forceupdate).
For `Table` and `List`, you'll need to call [`forceUpdateGrid`](https://github.com/bvaughn/react-virtualized/blob/master/docs/Table.md#forceupdategrid) to ensure that the inner `Grid` is also updated. For `MultiGrid`, you'll need to call [`forceUpdateGrids`](https://github.com/bvaughn/react-virtualized/blob/master/docs/MultiGrid.md#forceupdategrids) to ensure that the inner `Grid`s are updated.

Documentation
---------------

API documentation available [here](docs/README.md).

There are also a couple of how-to guides:
* [Customizing classes and styles](docs/customizingStyles.md)
* [Displaying items in reverse order](docs/reverseList.md)
* [Using AutoSizer](docs/usingAutoSizer.md)
* [Creating an infinite-loading list](docs/creatingAnInfiniteLoadingList.md)
* [Natural sort Table](docs/tableWithNaturalSort.md)
* [Sorting a Table by multiple columns](docs/multiColumnSortTable.md)


Examples
---------------

Examples for each component can be seen in [the documentation](docs/README.md).

Here are some online demos of each component:

* [ArrowKeyStepper](https://bvaughn.github.io/react-virtualized/#/components/ArrowKeyStepper)
* [AutoSizer](https://bvaughn.github.io/react-virtualized/#/components/AutoSizer)
* [CellMeasurer](https://bvaughn.github.io/react-virtualized/#/components/CellMeasurer)
* [Collection](https://bvaughn.github.io/react-virtualized/#/components/Collection)
* [ColumnSizer](https://bvaughn.github.io/react-virtualized/#/components/ColumnSizer)
* [Grid](https://bvaughn.github.io/react-virtualized/#/components/Grid)
* [InfiniteLoader](https://bvaughn.github.io/react-virtualized/#/components/InfiniteLoader)
* [List](https://bvaughn.github.io/react-virtualized/#/components/List)
* [Masonry](https://bvaughn.github.io/react-virtualized/#/components/Masonry)
* [MultiGrid](https://bvaughn.github.io/react-virtualized/#/components/MultiGrid)
* [ScrollSync](https://bvaughn.github.io/react-virtualized/#/components/ScrollSync)
* [Table](https://bvaughn.github.io/react-virtualized/#/components/Table)
* [WindowScroller](https://bvaughn.github.io/react-virtualized/#/components/WindowScroller)

And here are some "recipe" type demos:
* [Table with resizable (drag and drop) columns](https://codesandbox.io/s/j30k46l7xw)
* [Collapsable tree view](https://rawgit.com/bvaughn/react-virtualized/master/playground/tree.html)
* [Full-page grid (spreadsheet)](https://rawgit.com/bvaughn/react-virtualized/master/playground/grid.html)
* [Dynamic cell measuring](https://rawgit.com/bvaughn/react-virtualized/master/playground/chat.html)
* [Cell hover effects](https://rawgit.com/bvaughn/react-virtualized/master/playground/hover.html)

Supported Browsers
---------------
react-virtualized aims to support all evergreen browsers and recent mobile browsers for iOS and Android. IE 9+ is also supported (although IE 9 will require some user-defined, custom CSS since flexbox layout is not supported).

If you find a browser-specific problem, please report it along with a repro case. The easiest way to do this is probably by forking [this Plunker](https://plnkr.co/edit/6syKo8cx3RfoO96hXFT1).

Friends
---------------
Here are some great components built on top of react-virtualized:
* [react-infinite-calendar](https://github.com/clauderic/react-infinite-calendar): Infinite scrolling date-picker with localization, themes, keyboard support, and more
* [react-sortable-hoc](https://github.com/clauderic/react-sortable-hoc): Higher-order components to turn any list into an animated, touch-friendly, sortable list
* [react-sortable-tree](https://github.com/fritz-c/react-sortable-tree): Drag-and-drop sortable representation of hierarchical data
* [react-virtualized-checkbox](https://github.com/emilebres/react-virtualized-checkbox): Checkbox group component with virtualization for large number of options
* [react-virtualized-select](https://github.com/bvaughn/react-virtualized-select): Drop-down menu for React with windowing to support large numbers of options.
* [react-vtree](https://github.com/Lodin/react-vtree): Low-level tree component for React with virtualization to support large number of elements.
* [react-virtualized-tree](https://github.com/diogofcunha/react-virtualized-tree/): A reactive tree component that aims to render large sets of tree structured data in an elegant and performant way
* [react-timeline-9000](https://github.com/BHP-DevHub/react-timeline-9000/): A calendar timeline component that is capable of displaying and interacting with a large number of items

Contributions
------------

Use [GitHub issues](https://github.com/bvaughn/react-virtualized/issues) for requests.

I actively welcome pull requests; learn how to [contribute](https://github.com/bvaughn/react-virtualized/blob/master/CONTRIBUTING.md).

Changelog
---------

Changes are tracked in the [changelog](https://github.com/bvaughn/react-virtualized/blob/master/CHANGELOG.md).

License
---------

*react-virtualized* is available under the MIT License.