Backend API
        
    import React, { useCallback, useMemo, useState } from 'react';
import { Button } from 'devextreme-react';
import { Popup, ToolbarItem } from 'devextreme-react/popup';
import ScrollView from 'devextreme-react/scroll-view';
export default function App() {
  const [popupVisible, setPopupVisible] = useState(false);
  const [popupWithScrollViewVisible, setPopupWithScrollViewVisible] = useState(false);
  const showPopup = useCallback(() => {
    setPopupVisible(true);
  }, [setPopupVisible]);
  const showPopupWithScrollView = useCallback(() => {
    setPopupWithScrollViewVisible(true);
  }, [setPopupWithScrollViewVisible]);
  const hide = useCallback(() => {
    setPopupVisible(false);
    setPopupWithScrollViewVisible(false);
  }, [setPopupVisible, setPopupWithScrollViewVisible]);
  const bookButtonOptions = useMemo(() => ({
    width: 300,
    text: 'Book',
    type: 'default',
    stylingMode: 'contained',
    onClick: hide,
  }), [hide]);
  return (
    <React.Fragment>
      <div className="demo-container">
        <div className="button-container">
          <Button
            text="Show Popup"
            type="default"
            width={300}
            onClick={showPopup}
          />
          <div className="label"> A native scrollable container </div>
        </div>
        <div className="button-container">
          <Button
            text="Show Popup"
            width={300}
            onClick={showPopupWithScrollView}
          />
          <div className="label"> The ScrollView </div>
        </div>
      </div>
      <Popup
        width={360}
        height={320}
        visible={popupVisible}
        onHiding={hide}
        hideOnOutsideClick={true}
        showCloseButton={true}
        title="Downtown Inn">
        <div className="popup-content">
          <div className="caption">Description</div>
          In the heart of LA's business district, the Downtown Inn has a welcoming staff
          and award winning restaurants that remain open 24 hours a day.
          Use our conference room facilities to conduct meetings and have a drink
          at our beautiful rooftop bar.
          <br /><br />
          <div className="content">
            <div>
              <div className="caption">Features</div>
              <div>Concierge</div>
              <div>Restaurant</div>
              <div>Valet Parking</div>
              <div>Fitness Center</div>
              <div>Sauna</div>
              <div>Airport Shuttle</div>
            </div>
            <div>
              <div className="caption">Rooms</div>
              <div>Climate control</div>
              <div>Air conditioning</div>
              <div>Coffee/tea maker</div>
              <div>Iron/ironing</div>
            </div>
          </div>
        </div>
        <ToolbarItem
          widget="dxButton"
          toolbar="bottom"
          location="center"
          options={bookButtonOptions}
        />
      </Popup>
      <Popup
        width={360}
        height={320}
        visible={popupWithScrollViewVisible}
        onHiding={hide}
        hideOnOutsideClick={true}
        showCloseButton={true}
        title="Downtown Inn">
        <ScrollView width='100%' height='100%'>
          <div className="caption">Description</div>
          In the heart of LA's business district, the Downtown Inn has a welcoming staff
          and award winning restaurants that remain open 24 hours a day.
          Use our conference room facilities to conduct meetings and have a drink
          at our beautiful rooftop bar.
          <br /><br />
          <div className="content">
            <div>
              <div className="caption">Features</div>
              <div>Concierge</div>
              <div>Restaurant</div>
              <div>Valet Parking</div>
              <div>Fitness Center</div>
              <div>Sauna</div>
              <div>Airport Shuttle</div>
            </div>
            <div>
              <div className="caption">Rooms</div>
              <div>Climate control</div>
              <div>Air conditioning</div>
              <div>Coffee/tea maker</div>
              <div>Iron/ironing</div>
            </div>
          </div>
        </ScrollView>
        <ToolbarItem
          widget="dxButton"
          toolbar="bottom"
          location="center"
          options={bookButtonOptions}
        />
      </Popup>
    </React.Fragment>
  );
}
    
    import React, { useCallback, useMemo, useState } from 'react';
import { Button } from 'devextreme-react';
import { Popup, ToolbarItem } from 'devextreme-react/popup';
import ScrollView from 'devextreme-react/scroll-view';
export default function App() {
  const [popupVisible, setPopupVisible] = useState(false);
  const [popupWithScrollViewVisible, setPopupWithScrollViewVisible] = useState(false);
  const showPopup = useCallback(() => {
    setPopupVisible(true);
  }, [setPopupVisible]);
  const showPopupWithScrollView = useCallback(() => {
    setPopupWithScrollViewVisible(true);
  }, [setPopupWithScrollViewVisible]);
  const hide = useCallback(() => {
    setPopupVisible(false);
    setPopupWithScrollViewVisible(false);
  }, [setPopupVisible, setPopupWithScrollViewVisible]);
  const bookButtonOptions = useMemo(
    () => ({
      width: 300,
      text: 'Book',
      type: 'default',
      stylingMode: 'contained',
      onClick: hide,
    }),
    [hide],
  );
  return (
    <React.Fragment>
      <div className="demo-container">
        <div className="button-container">
          <Button
            text="Show Popup"
            type="default"
            width={300}
            onClick={showPopup}
          />
          <div className="label"> A native scrollable container </div>
        </div>
        <div className="button-container">
          <Button
            text="Show Popup"
            width={300}
            onClick={showPopupWithScrollView}
          />
          <div className="label"> The ScrollView </div>
        </div>
      </div>
      <Popup
        width={360}
        height={320}
        visible={popupVisible}
        onHiding={hide}
        hideOnOutsideClick={true}
        showCloseButton={true}
        title="Downtown Inn"
      >
        <div className="popup-content">
          <div className="caption">Description</div>
          In the heart of LA's business district, the Downtown Inn has a welcoming staff and
          award winning restaurants that remain open 24 hours a day. Use our conference room
          facilities to conduct meetings and have a drink at our beautiful rooftop bar.
          <br />
          <br />
          <div className="content">
            <div>
              <div className="caption">Features</div>
              <div>Concierge</div>
              <div>Restaurant</div>
              <div>Valet Parking</div>
              <div>Fitness Center</div>
              <div>Sauna</div>
              <div>Airport Shuttle</div>
            </div>
            <div>
              <div className="caption">Rooms</div>
              <div>Climate control</div>
              <div>Air conditioning</div>
              <div>Coffee/tea maker</div>
              <div>Iron/ironing</div>
            </div>
          </div>
        </div>
        <ToolbarItem
          widget="dxButton"
          toolbar="bottom"
          location="center"
          options={bookButtonOptions}
        />
      </Popup>
      <Popup
        width={360}
        height={320}
        visible={popupWithScrollViewVisible}
        onHiding={hide}
        hideOnOutsideClick={true}
        showCloseButton={true}
        title="Downtown Inn"
      >
        <ScrollView
          width="100%"
          height="100%"
        >
          <div className="caption">Description</div>
          In the heart of LA's business district, the Downtown Inn has a welcoming staff and
          award winning restaurants that remain open 24 hours a day. Use our conference room
          facilities to conduct meetings and have a drink at our beautiful rooftop bar.
          <br />
          <br />
          <div className="content">
            <div>
              <div className="caption">Features</div>
              <div>Concierge</div>
              <div>Restaurant</div>
              <div>Valet Parking</div>
              <div>Fitness Center</div>
              <div>Sauna</div>
              <div>Airport Shuttle</div>
            </div>
            <div>
              <div className="caption">Rooms</div>
              <div>Climate control</div>
              <div>Air conditioning</div>
              <div>Coffee/tea maker</div>
              <div>Iron/ironing</div>
            </div>
          </div>
        </ScrollView>
        <ToolbarItem
          widget="dxButton"
          toolbar="bottom"
          location="center"
          options={bookButtonOptions}
        />
      </Popup>
    </React.Fragment>
  );
}
    
    import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
  <App />,
  document.getElementById('app'),
);
    
    window.exports = window.exports || {};
window.config = {
  transpiler: 'ts',
  typescriptOptions: {
    module: 'system',
    emitDecoratorMetadata: true,
    experimentalDecorators: true,
    jsx: 'react',
  },
  meta: {
    'react': {
      'esModule': true,
    },
    'typescript': {
      'exports': 'ts',
    },
    'devextreme/time_zone_utils.js': {
      'esModule': true,
    },
    'devextreme/localization.js': {
      'esModule': true,
    },
    'devextreme/viz/palette.js': {
      'esModule': true,
    },
    'openai': {
      'esModule': true,
    },
  },
  paths: {
    'npm:': 'https://cdn.jsdelivr.net/npm/',
    'bundles:': '../../../../bundles/',
    'externals:': '../../../../bundles/externals/',
  },
  defaultExtension: 'js',
  map: {
    'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',
    'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
    'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
    'react': 'npm:react@17.0.2/umd/react.development.js',
    'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js',
    'prop-types': 'npm:prop-types/prop-types.js',
    'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
    'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js',
    'es6-object-assign': 'npm:es6-object-assign',
    'devextreme': 'npm:devextreme@link:../../packages/devextreme/artifacts/npm/devextreme/cjs',
    'devextreme-react': 'npm:devextreme-react@link:../../packages/devextreme-react/npm/cjs',
    'devextreme-quill': 'npm:devextreme-quill@1.7.6/dist/dx-quill.min.js',
    'devexpress-diagram': 'npm:devexpress-diagram@2.2.24/dist/dx-diagram.js',
    'devexpress-gantt': 'npm:devexpress-gantt@4.1.64/dist/dx-gantt.js',
    'inferno': 'npm:inferno@8.2.3/dist/inferno.min.js',
    'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
    'inferno-create-element': 'npm:inferno-create-element@8.2.3/dist/inferno-create-element.min.js',
    'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
    'inferno-hydrate': 'npm:inferno-hydrate/dist/inferno-hydrate.min.js',
    'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
    'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
    'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
    '@preact/signals-core': 'npm:@preact/signals-core@1.8.0/dist/signals-core.min.js',
    'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3',
    // SystemJS plugins
    'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',
    'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js',
    // Prettier
    'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
    'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
  },
  packages: {
    'devextreme': {
      defaultExtension: 'js',
    },
    'devextreme-react': {
      main: 'index.js',
    },
    'devextreme-react/common': {
      main: 'index.js',
    },
    'devextreme/events/utils': {
      main: 'index',
    },
    'devextreme/common/core/events/utils': {
      main: 'index',
    },
    'devextreme/localization/messages': {
      format: 'json',
      defaultExtension: 'json',
    },
    'devextreme/events': {
      main: 'index',
    },
    'es6-object-assign': {
      main: './index.js',
      defaultExtension: 'js',
    },
  },
  packageConfigPaths: [
    'npm:@devextreme/*/package.json',
  ],
  babelOptions: {
    sourceMaps: false,
    stage0: true,
    react: true,
  },
};
System.config(window.config);
// eslint-disable-next-line
const useTgzInCSB = ['openai'];
    
    import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
    
    <!DOCTYPE html>
<html lang="en">
  <head>
    <title>DevExtreme Demo</title>
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
    <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/25.1.6/css/dx.light.css" />
    <link rel="stylesheet" type="text/css" href="styles.css" />
    <script src="https://cdn.jsdelivr.net/npm/core-js@2.6.12/client/shim.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/systemjs@0.21.3/dist/system.js"></script>
    <script type="text/javascript" src="config.js"></script>
    <script type="text/javascript">
      System.import("./index.tsx");
    </script>
  </head>
  <body class="dx-viewport">
    <div class="demo-container">
      <div id="app"></div>
    </div>
  </body>
</html>
    
    .label {
  font-size: 12px;
}
.demo-container {
  height: 450px;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  gap: 40px;
}
.button-container {
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  gap: 15px;
}
.dx-popup-content {
  font-size: 12px;
}
.caption {
  padding-bottom: 8px;
  font-weight: 500;
}
.content {
  display: flex;
  justify-content: space-between;
}
.popup-content {
  height: 100%;
  width: 100%;
}
    
                A click on the second Show Popup button also displays a Popup with a scrollbar, but this scrollbar belongs to the ScrollView component. This implementation is more flexible. For example, you can enable right-to-left representation or scroll the content to a specific position. For more information about the available options, refer to the ScrollView API section.
To implement the second solution, follow the steps below: