React-virtualized

React-virtualized components for efficiently rendering large lists and tabular data.

React components for efficiently rendering large lists and tabular data. Check out the demo for some examples. Learn more about becoming a sponsor! If you're considering adding react-virtualized to a project, take a look at react-window as a possible lighter-weight alternative. Learn more about how the two libraries compare here.

React-virtualized

A common requirement in web applications is displaying lists of data. Or tables with headers and scrolls. You have probably done it hundreds of times. And what if the pagination technique is not an option or maybe it is but you still have to show a lot of information? The infinite scrolling technique only limits rendering future elements and renders all previous rows, causing performance issues for very large lists. React developers typically use the map function and render lists with multiple rows. If they use that approach for rendering thousands of rows, the web browser will always create thousands of DOM elements even though a scrollbar typically hides overflowing content. You can experiment with this scenario in this GitHub repository. Look at the following preview and see how directly-rendered large lists affect app performance:. In less powerful devices or with more complex layouts, this could freeze the UI or even crash the browser, affecting app usability. One way is by using a library like react-virtualized, which renders large lists in a performance-friendly technique called virtual rendering. This library typically renders only visible rows in a large list and creates fewer DOM elements to reduce the performance overhead in apps. In other words, this library presents only the required rows and indicates the presence of other hidden rows virtually via CSS styles. There are 1, comments in the app, but it only shows around ten at any moment the ones that fit on the screen , until you scroll to show more. So it makes sense to load only the elements that are visible and unload them when they are not by replacing them with new ones.

More in-depth react-window examples React-virtualized Taylor implemented an open-source Pitchfork music reviews scraper src using react-window and FixedSizeGrid, react-virtualized.

React itself aims to decrease the number of times we directly interact with the DOM. In this article, we will compare react-window and react-virtualize, as they are similar but offer different levels of support and overhead to your project. List virtualization, or windowing, is a technique for improving the performance of rendering long lists by only writing the visible portion of the list to the DOM. This works by having a small window element moving over a bigger container, which will host the items, but will only render the items that are currently visible to the user through that window. A few other items in the list, which are outside the limits of the window but are close to the upper and lower boundaries, might be rendered so that when they enter into the view, they will already be loaded into the page. This gives the user a more natural scrolling experience. Without windowing, React has to write your entire list to the DOM before one list item is visible.

A common requirement in web applications is displaying lists of data. Or tables with headers and scrolls. You have probably done it hundreds of times. And what if the pagination technique is not an option or maybe it is but you still have to show a lot of information? The infinite scrolling technique only limits rendering future elements and renders all previous rows, causing performance issues for very large lists. React developers typically use the map function and render lists with multiple rows. If they use that approach for rendering thousands of rows, the web browser will always create thousands of DOM elements even though a scrollbar typically hides overflowing content. You can experiment with this scenario in this GitHub repository. Look at the following preview and see how directly-rendered large lists affect app performance:.

React-virtualized

Working with data in React is relatively easy because React is designed to handle data as state. The hassle begins when the amount of data you need to consume becomes massive. For example, say you have to handle a dataset which is between , records.

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Public methods. This approach also requires the node to be rendered synchronously with react-dom, so complex list items may seem to appear slower when scrolling. License MIT. This is done to prevent problems with flexbox layouts. Though it can improve performance, windowing is not a silver bullet. This means you can also pass through additional properties that affect cell rendering to ensure changes are detected. Loading Comments Email Required Name Required Website. Use react-window as your virtualized list building block to satisfy your specific use case without bringing in a lot of unnecessary code. However, I would recommend using react-virtualized over react-window if:. Used by Scott Taylor implemented an open-source Pitchfork music reviews scraper src using react-window and FixedSizeGrid. Leave a Reply Cancel reply. Repository Git github. 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.

Convert Figma designs to production-ready React.

Fixed width ; if specified, the child's width property will not be managed. Now you're ready to start using the components. Flex containers don't prevent their children from growing and AutoSizer greedily grows to fill as much space as possible. For example, if I set 3 as the value of this property:. This gives the user a more natural scrolling experience. You signed out in another tab or window. Supported Browsers. The easiest way to do this is probably by forking this Plunker. It also has a relative position but a hidden value for overflow. By default all react-virtualized components use shallowCompare to avoid re-rendering unless props or state has changed. Combining the two can be problematic. The solution to this is to let react-virtualized know that something external has changed. If they use that approach for rendering thousands of rows, the web browser will always create thousands of DOM elements even though a scrollbar typically hides overflowing content. Releases 5 v9.