React container that will auto scroll to bottom

Overview

react-scroll-to-bottom

npm version Node.js CI

React container that will auto scroll to bottom or top if new content is added and viewport is at the bottom, similar to tail -f. Otherwise, a "jump to bottom" button will be shown to allow user to quickly jump to bottom.

Demo

Try out the demo at https://compulim.github.io/react-scroll-to-bottom/.

Demo

Breaking changes

[3.0.0] - 2020-06-21

  • scrollToBottom/scrollToEnd/scrollToStart/scrollToTop now accept an option { behavior: 'auto' | 'smooth' }
    • Without the option, it is by default to artificial smooth scrolling (smooth), to keep existing behavior
    • This behavior may change in the future, by defaulting to discrete scrolling (auto), to better align with HTML DOMElement.scrollIntoView standard
    • During the transition, please always pass { behavior: 'smooth' } to keep existing behavior

[2.0.0] - 2020-05-07

  • Starting from [email protected], we requires React 16.8.6 or above. This enable developers to use React Hooks to add features to the scroll view.

Sample code

import { css } from 'emotion';
import ScrollToBottom from 'react-scroll-to-bottom';

const ROOT_CSS = css({
  height: 600,
  width: 400
});

export default props => (
  <ScrollToBottom className={ROOT_CSS}>
    <p>
      Nostrud nisi duis veniam ex esse laboris consectetur officia et. Velit cillum est veniam culpa magna sit
      exercitation excepteur consectetur ea proident. Minim pariatur nisi dolore Lorem ipsum adipisicing do. Ea
      cupidatat Lorem sunt fugiat. Irure est sunt nostrud commodo sint.
    </p>
    <p>
      Duis consectetur ad in fugiat et aliquip esse adipisicing occaecat et sunt ea occaecat ad. Tempor anim consequat
      commodo veniam nostrud sunt deserunt adipisicing Lorem Lorem magna irure. Eu ut ipsum magna nulla sunt duis Lorem
      officia pariatur. Nostrud nisi anim nostrud ea est do nostrud cupidatat occaecat dolor labore do anim. Laborum
      quis veniam ipsum ullamco voluptate sit ea qui adipisicing aliqua sunt dolor nulla. Nulla consequat sunt qui amet.
      Pariatur esse pariatur veniam non fugiat laboris eu nulla incididunt.
    </p>
    <p>
      Laboris duis do consectetur aliquip non aliquip ad ad quis minim. Aute magna tempor occaecat magna fugiat culpa.
      Commodo id eiusmod ea pariatur consequat fugiat minim est anim. Ipsum amet ipsum eu nisi. Exercitation minim amet
      incididunt tempor do ut id in officia eu sit est. Dolor qui laboris laboris tempor sunt velit eiusmod non ipsum
      exercitation ut sint ipsum officia.
    </p>
  </ScrollToBottom>
);

We use glamor for component styles. It is not required, but we don't support style props for performance reason.

Props

Name Type Default Description
checkInterval number 150 Recurring interval of stickiness check, in milliseconds (minimum is 17 ms)
className string Set the class name for the root element
debounce number 17 Set the debounce for tracking the onScroll event
debug bool NODE_ENV === 'development' Show debug information in console
followButtonClassName string Set the class name for the follow button
initialScrollBehavior string smooth Set the initial scroll behavior, either "auto" (discrete scrolling) or "smooth"
mode string "bottom" Set it to "bottom" for scroll-to-bottom, "top" for scroll-to-top
nonce string Set the nonce for Content Security Policy
scroller function () => Infinity A function to determine how far should scroll when scroll is needed
scrollViewClassName string Set the class name for the container element that house all props.children

Hooks

You can use React Hooks to perform various operations and signal state changes. The component which use the hook must stay under <ScrollToBottom> or <Composer>.

Category Name Type Description
Function useScrollTo () => (scrollTop: number | '100%') => void Scroll panel to specified position
Function useScrollToBottom () => () => void Scroll panel to bottom
Function useScrollToEnd () => () => void Scroll panel to end (depends on mode)
Function useScrollToStart () => () => void Scroll panel to start (depends on mode)
Function useScrollToTop () => () => void Scroll panel to top
Observer useObserveScrollPosition (observer: (({ scrollTop: number }) => void) | false) => void Observe scroll position change by passing a callback function
State useAnimating () => [boolean] true if the panel is animating scroll effect
State useAnimatingToEnd boolean true if the panel is animating scroll effect and towards the end (depends on mode)
State useAtBottom () => [boolean] true if the panel is currently near bottom
State useAtEnd () => [boolean] true if the panel is currently near the end (depends on mode)
State useAtStart () => [boolean] true if the panel is currently near the start (depends on mode)
State useAtTop () => [boolean] true if the panel is currently near top
State useMode () => [string] "bottom" for scroll-to-bottom, "top" for scroll-to-top
State useSticky () => [boolean] true if the panel is sticking to the end

Callback function passed to useObserveScrollPosition will be called rapidly during scrolling. To unsubscribe, pass a falsy value.

Sample code

The following sample code will put a button inside the content view only if the view is not at the bottom. When the button is clicked, it will scroll the view to the bottom.

Note: useScrollToBottom can only be called inside components hosted under <ScrollToBottom>.

import ScrollToBottom, { useScrollToBottom, useSticky } from 'react-scroll-to-bottom';

const Content = () => {
  const scrollToBottom = useScrollToBottom();
  const [sticky] = useSticky();

  return (
    <React.Fragment>
      <p>
        Labore commodo consectetur commodo et Lorem mollit voluptate velit adipisicing proident sit. Dolor consequat
        nostrud aliquip ea anim enim. Culpa quis tempor et quis esse proident cupidatat reprehenderit laborum ullamco.
      </p>
      <p>
        Incididunt labore nulla cupidatat occaecat elit esse occaecat culpa irure et nisi excepteur. Duis Lorem labore
        consectetur nostrud et voluptate culpa consequat enim reprehenderit. Id voluptate occaecat anim consequat id ea
        eiusmod laborum proident irure veniam esse. Aliquip nostrud culpa nostrud laborum cillum adipisicing dolore. Est
        tempor labore Lorem ad cupidatat reprehenderit exercitation pariatur officia ex adipisicing cupidatat
        exercitation.
      </p>
      <p>
        Est labore cupidatat exercitation est laboris et tempor Lorem irure velit ea commodo sint officia. Ullamco
        exercitation cillum est fugiat do. Enim qui eu veniam nostrud tempor elit. Duis elit mollit ut reprehenderit sit
        adipisicing proident culpa veniam sint veniam consectetur fugiat Lorem. Sint dolor proident commodo proident non
        cupidatat labore.
      </p>
      {!sticky && <button onClick={scrollToBottom}>Click me to scroll to bottom</button>}
    </React.Fragment>
  );
};

export default () => (
  <ScrollToBottom>
    <Content />
  </ScrollToBottom>
);

Context

Starting with React Hooks, we are deprecating the React Context. New functions may not be added to context.

We use 2 different contexts with different performance characteristics to provide better overall performance. Function context contains immutable functions. State context may change when the user scroll the panel.

Function context

This context contains functions used to manipulate the container. And will not update throughout the lifetime of the composer.

Name Type Description
scrollTo (scrollTop: number | '100%') => void Scroll panel to specified position
scrollToBottom () => void Scroll panel to bottom
scrollToEnd () => void Scroll panel to end (depends on mode)
scrollToStart () => void Scroll panel to start (depends on mode)
scrollToTop () => void Scroll panel to top

State context

This context contains state of the container.

Name Type Description
animating boolean true if the panel is animating scroll effect
animatingToEnd boolean true if the panel is animating scroll effect and towards the end (depends on mode)
atBottom boolean true if the panel is currently near bottom
atEnd boolean true if the panel is currently near the end (depends on mode)
atStart boolean true if the panel is currently near the start (depends on mode)
atTop boolean true if the panel is currently near top
mode string "bottom" for scroll-to-bottom, "top" for scroll-to-top
sticky boolean true if the panel is sticking to the end

atEnd and sticky are slightly different. During scroll animation, the panel is not at the end yet, but it is still sticky.

Sample code

The following sample code will put a button inside the content view only if the view is not at the bottom. When the button is clicked, it will scroll the view to the bottom.

import ScrollToBottom from 'react-scroll-to-bottom';

const Content = ({ scrollToBottom, sticky }) => {
  return (
    <React.Fragment>
      <p>
        Labore commodo consectetur commodo et Lorem mollit voluptate velit adipisicing proident sit. Dolor consequat
        nostrud aliquip ea anim enim. Culpa quis tempor et quis esse proident cupidatat reprehenderit laborum ullamco.
      </p>
      <p>
        Incididunt labore nulla cupidatat occaecat elit esse occaecat culpa irure et nisi excepteur. Duis Lorem labore
        consectetur nostrud et voluptate culpa consequat enim reprehenderit. Id voluptate occaecat anim consequat id ea
        eiusmod laborum proident irure veniam esse. Aliquip nostrud culpa nostrud laborum cillum adipisicing dolore. Est
        tempor labore Lorem ad cupidatat reprehenderit exercitation pariatur officia ex adipisicing cupidatat
        exercitation.
      </p>
      <p>
        Est labore cupidatat exercitation est laboris et tempor Lorem irure velit ea commodo sint officia. Ullamco
        exercitation cillum est fugiat do. Enim qui eu veniam nostrud tempor elit. Duis elit mollit ut reprehenderit sit
        adipisicing proident culpa veniam sint veniam consectetur fugiat Lorem. Sint dolor proident commodo proident non
        cupidatat labore.
      </p>
      {!sticky && <button onClick={scrollToBottom}>Click me to scroll to bottom</button>}
    </React.Fragment>
  );
};

export default () => (
  <ScrollToBottom>
    <FunctionContext.Consumer>
      {({ scrollToBottom }) => (
        <StateContext.Consumer>
          {({ sticky }) => <Content scrollToBottom={scrollToBottom} sticky={sticky} />}
        </StateContext.Consumer>
      )}
    </FunctionContext.Consumer>
  </ScrollToBottom>
);

Observing scroll position

You can use useObserveScrollPosition to listen to scroll change.

// This is the content rendered inside the scrollable container
const ScrollContent = () => {
  const observer = useCallback(({ scrollTop }) => {
    console.log(scrollTop);
  }, []);

  useObserveScrollPosition(observer);

  return <div>Hello, World!</div>;
};

If you want to turn off the hook, in the render call, pass a falsy value, e.g. useObserveScrollPosition(false).

Please note that the observer will called very frequently, it is recommended:

  • Only observe the scroll position when needed
  • Don't put too much logic inside the callback function
  • If logic is needed, consider deferring handling using setTimeout or similar functions
  • Make sure the callback function passed on each render call is memoized appropriately, e.g. useCallback

For best practices on handling scroll event, please read this article.

Programmatically pausing scroll

This only works when mode prop is set to bottom (default).

You can pass a function to the scroller prop to customize how far the scrollable should animate/scroll (in pixel) when its content changed. The signature of the scroller function is:

scroller({ maxValue, minValue, offsetHeight, scrollHeight, scrollTop }) => number;
Argument Type Description
maxValue number Maximum distance (in pixel) to scroll
minValue number Minimum distance (in pixel) to scroll, see notes below
offsetHeight number View height of the scrollable container
scrollHeight number Total height of the content in the container, must be equal or greater than offsetHeight
scrollTop number Current scroll position (in pixel)

Note: the scroller function will get called when the scrollable is sticky and the content size change. If the scrollable is not sticky, the function will not be called as animation is not needed.

When the scrollable is animating, if there are new contents added to the scrollable, the scroller function will get called again with minValue set to the current position. The minValue means how far the animation has already scrolled.

By default, the scroller function will returns Infinity. When new content is added, it will scroll all the way to the bottom.

You can return a different value (in number) to indicates how far you want to scroll when the content has changed. If you return 0, the scrollable will stop scrolling for any new content. Returning any values less than maxValue will make the scrollable to lose its stickiness after animation. After the scrollable lose its stickiness, the scroller function will not be called again for any future content change, until the scrollable regains its stickiness.

Security

We support nonce-based Content Security Policy. To enable, the following directive is required:

Road map

  • Easier customization for "scroll to bottom" button
  • Debounce on showing "scroll to bottom" button
  • Investigate using scroll for scrolling and polyfill IE11

Contributions

Like us? Star us.

Want to make it better? File us an issue.

Don't like something you see? Submit a pull request.

Issues
  • Add ref prop instead of hooks

    Add ref prop instead of hooks

    It would be much easier if instead of using hooks like useScrollToBottom just add a ref prop and add all the methods inside. What I mean:

    const App = () => {
       const scrollRef = useRef();
    
       const scroll = () => {
         scrollRef.current.scrollToBottom()
         //and all other hooks like useSticky
         if(scrollRef.current.isSticky()) console.log('is sticky')
       }
       return (
            <ScrollToBottom mode="bottom" ref={scrollRef}>
                 <button onClick={scroll}>
                      Scroll
                  </button>
                  <Content />
            </ScrollToBottom>
       )
    }
    
    opened by johannb75 15
  • Debug always on

    Debug always on

    It seems that debs is always on, regardless of whether I pass debug={false} or not. Am I missing something?

    opened by albireox 9
  • Conflicts with the drop-down loaded components being used

    Conflicts with the drop-down loaded components being used

    2

    Can you help me solve this conflict?

    1. There seems to be a problem with the rolling bar monitor.
    2. I have 20 data, I did not slide to the top, triggering refresh.

    Please Please Please 。 Thanks you

    opened by liwan11123123 5
  • Why doesn't % work when styling height ?

    Why doesn't % work when styling height ?

    Hey, Thanks for the library. I have an issue with styling of my component. I'm trying to make my element responsive using % in CSS. The problem is that when I use % it doesn't work but when I change to a static value (px or a number), it works. My code (that doesn't work):

    const style = css({
    	height: "100%", //if I change this to a static value (`px` or a number),  it works
    });
    <div className="mobile_chat_content">
    	<ScrollToBottom mode="bottom" className={style}>
    		<button onClick={scrollToBottom}>
    			Click me to scroll to bottom
    		</button>
    		{messages.map((message, i) => (
    		       <Message
    			   key={message.id}
    			   text={message.content}
    		        />
    		))}
    	</ScrollToBottom>
    </div>
    

    I want my component to be responsive to the container, I can not change this to a static value If anyone has suggestions to help me, it would be cool to let me know. Thanks in advance.

    opened by johannb75 5
  • Move to React hooks

    Move to React hooks

    Otherwise, our downstreamers will get a warning in their apps.

    Warning: componentWillReceiveProps has been renamed, and is not recommended for use. See https://fb.me/react-async-component-lifecycle-hooks for details.
    
    * Move data fetching code or side effects to componentDidUpdate.
    * If you're updating state whenever props change, refactor your code to use memoization techniques or move it to static getDerivedStateFromProps. Learn more at: https://fb.me/react-derived-state
    * Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress this warning in non-strict mode. In React 17.x, only the UNSAFE_ name will work. To rename all deprecated lifecycles to their new names, you can run `npx react-codemod rename-unsafe-lifecycles` in your project source folder.
    
    opened by compulim 4
  • Use without glamor?

    Use without glamor?

    Hi!

    This component is great, and works really well. However, the use of Glamor adds significantly to the bundle size, making this a bit big to use off the shelf.

    For now, we have resolved by using the Composer component directly (as Glamor is only used in the AutoHideFollowButton and Panel components), but wondering if you would consider shifting away from Glamor by default? Failing that, perhaps the core components could be split out into a separate package?

    Using the component directly adds 13KB to our overall package; just Composer adds 3KB.

    opened by rmccue 4
  • Scroll lock when zoomed in or higher display DPI scaling is used

    Scroll lock when zoomed in or higher display DPI scaling is used

    On certain zoom levels or higher display DPI scaling your scroll to bottom functionality can hang (go into infinite loop I guess) and thus lock the scrolling (always trying to scroll to the bottom).

    You can see it in your own demo: https://compulim.github.io/react-scroll-to-bottom/

    I have FullHD (1920x1080) monitor and use normal (100%) windows display scaling. When setting the Chrome browser zoom level to 110% and 125% and clicking the scroll to bottom button, the scroll is locked and trying to scroll to the bottom infinitely.

    (Page refresh may be needed after changing the zoom on some zoom levels). Also tested with Edge on your demo but was not able to reproduce it even though it happened when I was using it. It can depend on the element height also for sure.

    When custom display scaling is used or simulated with the browser zoom the Element.scrollTop property can be a decimal as described on MDN: https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollTop

    I guess you have a problem in the check when the element has scrolled to the bottom and it keeps trying to do it infinitely. Also I was able to reproduce it only with the scroll to bottom functionality and not with the scroll to top so it could be because of scrollTop not being an integer when an element is scrolled to the bottom.

    This became more of an essay, but you got the point hopefully :).

    PS (image with 110% zoom): image upper temp1.scrollTop is after scrolling to bottom with the mouse wheel lower is after clicking your scroll to bottom Note: how the upper is higher than scrollHeight - clientHeight

    opened by abdonkov 3
  • Console warnings and outstanding 2.0.0 version

    Console warnings and outstanding 2.0.0 version

    After installing the package from NPM, it works fine, but I get some errors in the console about unsupported lifecycle methods.

    The 2.0.0 version which is on the master branch, but is not published to npm, gets rid of my warnings and works fine in my limited testing. Is this going to be released on npm or is there some outstanding issues with it?

    I see issue #29, and PR #36, but I'm not sure how it all fits together since the master branch seems to have already bumped react and fixed the warnings.

    opened by mreishus 3
  • ReferenceError: process is not defined

    ReferenceError: process is not defined

    I am getting process is not defined.

    react-scroll-to-bottom

    opened by parveezahamed 2
  • corrected typo in readme

    corrected typo in readme

    Changelog

    Please copy and paste new entries from CHANGELOG.md here.

    Specific changes

    Please list each individual specific change in this pull request.

    opened by sameem786-blip 0
  • Add React 17 to peerDependencies

    Add React 17 to peerDependencies

    Changelog

    • Add React 17 as a peerDependency
    opened by stevewillard 0
  • Support React 17

    Support React 17

    Do you mind adding React 17 as a peerDependency to remove the warning when installing? Thanks!

    opened by stevewillard 1
  • How to display none for webkit-scrollbar

    How to display none for webkit-scrollbar

    I can not find any way to css display none for webkit-scrollbar like this:

    ::-webkit-scrollbar {
          display: none;
    }
    
    opened by thaind97git 0
  • scroll to botton=m not working

    scroll to botton=m not working

    Please i wish something is done about this particular manager it doesnt install at all

    opened by Sugarcothe 0
  • Use react-scroll-to-bottom with custom scrollbar not working

    Use react-scroll-to-bottom with custom scrollbar not working

    I use react-scroll-to-bottom with nextjs and scss module. When i trying to use component instead

    . The custom scrollbar in scss is not applied. Bellow is my code. image image

    opened by cd-ducle 0
  • Added TypeScript typings

    Added TypeScript typings

    Changelog

    Please copy and paste new entries from CHANGELOG.md here.

    Specific changes

    Please list each individual specific change in this pull request.

    • Adds TypeScript type definitions file
    opened by justinbhopper 1
  • Try npm install @types/react-scroll-to-bottom

    Try npm install @types/react-scroll-to-bottom

    Hi flow!I I have a problem! How to use this component in the application with React and typescript?  I install and create simple chat app when run command npm i react-scroll-to-bottom result OK, no problem. But when I run command npm start result this problem\error:

    Could not find a declaration file for module 'react-scroll-to-bottom'. './node_modules/react-scroll-to-bottom/lib/index.js' implicitly has an 'any' type.
      Try `npm install @types/react-scroll-to-bottom` if it exists or add a new declaration (.d.ts) file containing `declare module 'react-scroll-to-bottom';`  TS7016
    
    opened by h4liss0n 4
  • can not install through npm

    can not install through npm

    Hi, i tried to install it but it is now woking, i get this error: `npm ERR! ERESOLVE unable to resolve dependency tree npm ERR! npm ERR! While resolving: [email protected] npm ERR! Found: [email protected] npm ERR! node_modules/react npm ERR! [email protected]"^17.0.1" from the root project npm ERR! npm ERR! Could not resolve dependency: npm ERR! peer [email protected]"^16.8.6" from [email protected] npm ERR! node_modules/react-scroll-to-bottom npm ERR! [email protected]"*" from the root project npm ERR! npm ERR! Fix the upstream dependency conflict, or retry npm ERR! this command with --force, or --legacy-peer-deps npm ERR! to accept an incorrect (and potentially broken) dependency resolution. npm ERR! npm ERR! See C:\Users\Shadi\AppData\Local\npm-cache\eresolve-report.txt for a full report.

    npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\Shadi\AppData\Local\npm-cache_logs\2021-03-20T12_03_02_358Z-debug.log PS D:\chat_app\client> npm i [email protected] npm ERR! ERESOLVE unable to resolve dependency tree npm ERR! npm ERR! While resolving: [email protected] npm ERR! Found: [email protected] npm ERR! node_modules/react npm ERR! [email protected]"^17.0.1" from the root project npm ERR! npm ERR! Could not resolve dependency: npm ERR! peer [email protected]"^16.8.6" from [email protected] npm ERR! node_modules/react-scroll-to-bottom npm ERR! [email protected]"3.0.0" from the root project npm ERR! npm ERR! Fix the upstream dependency conflict, or retry npm ERR! this command with --force, or --legacy-peer-deps npm ERR! to accept an incorrect (and potentially broken) dependency resolution. npm ERR! npm ERR! See C:\Users\Shadi\AppData\Local\npm-cache\eresolve-report.txt for a full report.

    npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\Shadi\AppData\Local\npm-cache_logs\2021-03-20T12_03_18_656Z-debug.log PS D:\chat_app\client> npm i [email protected] npm ERR! code ERESOLVE npm ERR! ERESOLVE unable to resolve dependency tree npm ERR! npm ERR! While resolving: [email protected] npm ERR! Found: [email protected] npm ERR! node_modules/react npm ERR! [email protected]"^17.0.1" from the root project npm ERR! npm ERR! Could not resolve dependency: npm ERR! peer [email protected]"^16.8.6" from [email protected] npm ERR! node_modules/react-scroll-to-bottom npm ERR! [email protected]"2.0.0" from the root project npm ERR! npm ERR! Fix the upstream dependency conflict, or retry npm ERR! this command with --force, or --legacy-peer-deps npm ERR! to accept an incorrect (and potentially broken) dependency resolution. npm ERR! npm ERR! See C:\Users\SSSS\AppData\Local\npm-cache\eresolve-report.txt for a full report.

    npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\SSSS\AppData\Local\npm-cache_logs\2021-03-20T12_03_46_506Z-debug.log`

    I'm useing this version of react: "react": "^17.0.1",

    opened by shadigaafar 2
  • How to maintain scroll position in infinite scroll implementaion

    How to maintain scroll position in infinite scroll implementaion

    I'm fetching data when scrolling to the top (ie getting chat history). When new data is fetched, I want to keep the view of content where it was before fetching. But instead, the content scrolls all the way to the top.

    opened by clarchiu 1
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