Backend API
        
    import React from 'react';
import DataGrid, { Column, type DataGridTypes, Export } from 'devextreme-react/data-grid';
import { Workbook } from 'devextreme-exceljs-fork';
import { saveAs } from 'file-saver-es';
import { exportDataGrid } from 'devextreme-react/common/export/excel';
import { countries } from './data.ts';
const gdpFormat = {
  type: 'percent',
  precision: 1,
};
const onExporting = (e: DataGridTypes.ExportingEvent) => {
  const workbook = new Workbook();
  const worksheet = workbook.addWorksheet('CountriesPopulation');
  exportDataGrid({
    component: e.component,
    worksheet,
    topLeftCell: { row: 4, column: 1 },
  }).then((cellRange) => {
    // header
    const headerRow = worksheet.getRow(2);
    headerRow.height = 30;
    worksheet.mergeCells(2, 1, 2, 8);
    headerRow.getCell(1).value = 'Country Area, Population, and GDP Structure';
    headerRow.getCell(1).font = { name: 'Segoe UI Light', size: 22 };
    headerRow.getCell(1).alignment = { horizontal: 'center' };
    // footer
    const footerRowIndex = cellRange.to.row + 2;
    const footerRow = worksheet.getRow(footerRowIndex);
    worksheet.mergeCells(footerRowIndex, 1, footerRowIndex, 8);
    footerRow.getCell(1).value = 'www.wikipedia.org';
    footerRow.getCell(1).font = { color: { argb: 'BFBFBF' }, italic: true };
    footerRow.getCell(1).alignment = { horizontal: 'right' };
    workbook.xlsx.writeBuffer().then((buffer) => {
      saveAs(new Blob([buffer], { type: 'application/octet-stream' }), 'CountriesPopulation.xlsx');
    });
  });
};
const App = () => (
<>
  <div id="long-title">
      <h3>Country Area, Population, and GDP Structure</h3>
  </div>
  <DataGrid
    dataSource={countries}
    keyExpr="ID"
    showBorders={true}
    onExporting={onExporting}
    >
    <Export enabled={true} />
    <Column dataField="Country" />
    <Column dataField="Area" />
    <Column caption="Population">
      <Column
        dataField="Population_Total"
        caption="Total"
        format="fixedPoint"
        />
      <Column
        dataField="Population_Urban"
        caption="Urban"
        format="percent"
        />
    </Column>
    <Column caption="Nominal GDP">
      <Column
        dataField="GDP_Total"
        caption="Total, mln $"
        format="fixedPoint"
        sortOrder="desc"
        />
      <Column caption="By Sector">
        <Column
          dataField="GDP_Agriculture"
          caption="Agriculture"
          format={gdpFormat}
          width={95}
          />
        <Column
          dataField="GDP_Industry"
          caption="Industry"
          format={gdpFormat}
          width={80}
          />
        <Column
          dataField="GDP_Services"
          caption="Services"
          format={gdpFormat}
          width={85}
          />
      </Column>
    </Column>
  </DataGrid>
</>
);
export default App;
    
    import React from 'react';
import DataGrid, { Column, Export } from 'devextreme-react/data-grid';
import { Workbook } from 'devextreme-exceljs-fork';
import { saveAs } from 'file-saver-es';
import { exportDataGrid } from 'devextreme-react/common/export/excel';
import { countries } from './data.js';
const gdpFormat = {
  type: 'percent',
  precision: 1,
};
const onExporting = (e) => {
  const workbook = new Workbook();
  const worksheet = workbook.addWorksheet('CountriesPopulation');
  exportDataGrid({
    component: e.component,
    worksheet,
    topLeftCell: { row: 4, column: 1 },
  }).then((cellRange) => {
    // header
    const headerRow = worksheet.getRow(2);
    headerRow.height = 30;
    worksheet.mergeCells(2, 1, 2, 8);
    headerRow.getCell(1).value = 'Country Area, Population, and GDP Structure';
    headerRow.getCell(1).font = { name: 'Segoe UI Light', size: 22 };
    headerRow.getCell(1).alignment = { horizontal: 'center' };
    // footer
    const footerRowIndex = cellRange.to.row + 2;
    const footerRow = worksheet.getRow(footerRowIndex);
    worksheet.mergeCells(footerRowIndex, 1, footerRowIndex, 8);
    footerRow.getCell(1).value = 'www.wikipedia.org';
    footerRow.getCell(1).font = { color: { argb: 'BFBFBF' }, italic: true };
    footerRow.getCell(1).alignment = { horizontal: 'right' };
    workbook.xlsx.writeBuffer().then((buffer) => {
      saveAs(new Blob([buffer], { type: 'application/octet-stream' }), 'CountriesPopulation.xlsx');
    });
  });
};
const App = () => (
  <React.Fragment>
    <div id="long-title">
      <h3>Country Area, Population, and GDP Structure</h3>
    </div>
    <DataGrid
      dataSource={countries}
      keyExpr="ID"
      showBorders={true}
      onExporting={onExporting}
    >
      <Export enabled={true} />
      <Column dataField="Country" />
      <Column dataField="Area" />
      <Column caption="Population">
        <Column
          dataField="Population_Total"
          caption="Total"
          format="fixedPoint"
        />
        <Column
          dataField="Population_Urban"
          caption="Urban"
          format="percent"
        />
      </Column>
      <Column caption="Nominal GDP">
        <Column
          dataField="GDP_Total"
          caption="Total, mln $"
          format="fixedPoint"
          sortOrder="desc"
        />
        <Column caption="By Sector">
          <Column
            dataField="GDP_Agriculture"
            caption="Agriculture"
            format={gdpFormat}
            width={95}
          />
          <Column
            dataField="GDP_Industry"
            caption="Industry"
            format={gdpFormat}
            width={80}
          />
          <Column
            dataField="GDP_Services"
            caption="Services"
            format={gdpFormat}
            width={85}
          />
        </Column>
      </Column>
    </DataGrid>
  </React.Fragment>
);
export default App;
    
    import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
  <App />,
  document.getElementById('app'),
);
    
    export const countries = [{
  ID: 1,
  Country: 'Brazil',
  Area: 8515767,
  Population_Urban: 0.85,
  Population_Rural: 0.15,
  Population_Total: 205809000,
  GDP_Agriculture: 0.054,
  GDP_Industry: 0.274,
  GDP_Services: 0.672,
  GDP_Total: 2353025,
}, {
  ID: 2,
  Country: 'China',
  Area: 9388211,
  Population_Urban: 0.54,
  Population_Rural: 0.46,
  Population_Total: 1375530000,
  GDP_Agriculture: 0.091,
  GDP_Industry: 0.426,
  GDP_Services: 0.483,
  GDP_Total: 10380380,
}, {
  ID: 3,
  Country: 'France',
  Area: 675417,
  Population_Urban: 0.79,
  Population_Rural: 0.21,
  Population_Total: 64529000,
  GDP_Agriculture: 0.019,
  GDP_Industry: 0.183,
  GDP_Services: 0.798,
  GDP_Total: 2846889,
}, {
  ID: 4,
  Country: 'Germany',
  Area: 357021,
  Population_Urban: 0.75,
  Population_Rural: 0.25,
  Population_Total: 81459000,
  GDP_Agriculture: 0.008,
  GDP_Industry: 0.281,
  GDP_Services: 0.711,
  GDP_Total: 3859547,
}, {
  ID: 5,
  Country: 'India',
  Area: 3287590,
  Population_Urban: 0.32,
  Population_Rural: 0.68,
  Population_Total: 1286260000,
  GDP_Agriculture: 0.174,
  GDP_Industry: 0.258,
  GDP_Services: 0.569,
  GDP_Total: 2047811,
}, {
  ID: 6,
  Country: 'Italy',
  Area: 301230,
  Population_Urban: 0.69,
  Population_Rural: 0.31,
  Population_Total: 60676361,
  GDP_Agriculture: 0.02,
  GDP_Industry: 0.242,
  GDP_Services: 0.738,
  GDP_Total: 2147952,
}, {
  ID: 7,
  Country: 'Japan',
  Area: 377835,
  Population_Urban: 0.93,
  Population_Rural: 0.07,
  Population_Total: 126920000,
  GDP_Agriculture: 0.012,
  GDP_Industry: 0.275,
  GDP_Services: 0.714,
  GDP_Total: 4616335,
}, {
  ID: 8,
  Country: 'Russia',
  Area: 17098242,
  Population_Urban: 0.74,
  Population_Rural: 0.26,
  Population_Total: 146544710,
  GDP_Agriculture: 0.039,
  GDP_Industry: 0.36,
  GDP_Services: 0.601,
  GDP_Total: 1857461,
}, {
  ID: 9,
  Country: 'United States',
  Area: 9147420,
  Population_Urban: 0.81,
  Population_Rural: 0.19,
  Population_Total: 323097000,
  GDP_Agriculture: 0.0112,
  GDP_Industry: 0.191,
  GDP_Services: 0.797,
  GDP_Total: 17418925,
}, {
  ID: 10,
  Country: 'United Kingdom',
  Area: 244820,
  Population_Urban: 0.82,
  Population_Rural: 0.18,
  Population_Total: 65097000,
  GDP_Agriculture: 0.007,
  GDP_Industry: 0.21,
  GDP_Services: 0.783,
  GDP_Total: 2945146,
}];
    
    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,
    },
    'devextreme-exceljs-fork': {
      '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',
    'devextreme-exceljs-fork': 'npm:devextreme-exceljs-fork@4.4.2/dist/dx-exceljs-fork.min.js',
    'file-saver-es': 'npm:file-saver-es@2.0.5/dist/FileSaver.min.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'));
    
    export const countries = [
  {
    ID: 1,
    Country: 'Brazil',
    Area: 8515767,
    Population_Urban: 0.85,
    Population_Rural: 0.15,
    Population_Total: 205809000,
    GDP_Agriculture: 0.054,
    GDP_Industry: 0.274,
    GDP_Services: 0.672,
    GDP_Total: 2353025,
  },
  {
    ID: 2,
    Country: 'China',
    Area: 9388211,
    Population_Urban: 0.54,
    Population_Rural: 0.46,
    Population_Total: 1375530000,
    GDP_Agriculture: 0.091,
    GDP_Industry: 0.426,
    GDP_Services: 0.483,
    GDP_Total: 10380380,
  },
  {
    ID: 3,
    Country: 'France',
    Area: 675417,
    Population_Urban: 0.79,
    Population_Rural: 0.21,
    Population_Total: 64529000,
    GDP_Agriculture: 0.019,
    GDP_Industry: 0.183,
    GDP_Services: 0.798,
    GDP_Total: 2846889,
  },
  {
    ID: 4,
    Country: 'Germany',
    Area: 357021,
    Population_Urban: 0.75,
    Population_Rural: 0.25,
    Population_Total: 81459000,
    GDP_Agriculture: 0.008,
    GDP_Industry: 0.281,
    GDP_Services: 0.711,
    GDP_Total: 3859547,
  },
  {
    ID: 5,
    Country: 'India',
    Area: 3287590,
    Population_Urban: 0.32,
    Population_Rural: 0.68,
    Population_Total: 1286260000,
    GDP_Agriculture: 0.174,
    GDP_Industry: 0.258,
    GDP_Services: 0.569,
    GDP_Total: 2047811,
  },
  {
    ID: 6,
    Country: 'Italy',
    Area: 301230,
    Population_Urban: 0.69,
    Population_Rural: 0.31,
    Population_Total: 60676361,
    GDP_Agriculture: 0.02,
    GDP_Industry: 0.242,
    GDP_Services: 0.738,
    GDP_Total: 2147952,
  },
  {
    ID: 7,
    Country: 'Japan',
    Area: 377835,
    Population_Urban: 0.93,
    Population_Rural: 0.07,
    Population_Total: 126920000,
    GDP_Agriculture: 0.012,
    GDP_Industry: 0.275,
    GDP_Services: 0.714,
    GDP_Total: 4616335,
  },
  {
    ID: 8,
    Country: 'Russia',
    Area: 17098242,
    Population_Urban: 0.74,
    Population_Rural: 0.26,
    Population_Total: 146544710,
    GDP_Agriculture: 0.039,
    GDP_Industry: 0.36,
    GDP_Services: 0.601,
    GDP_Total: 1857461,
  },
  {
    ID: 9,
    Country: 'United States',
    Area: 9147420,
    Population_Urban: 0.81,
    Population_Rural: 0.19,
    Population_Total: 323097000,
    GDP_Agriculture: 0.0112,
    GDP_Industry: 0.191,
    GDP_Services: 0.797,
    GDP_Total: 17418925,
  },
  {
    ID: 10,
    Country: 'United Kingdom',
    Area: 244820,
    Population_Urban: 0.82,
    Population_Rural: 0.18,
    Population_Total: 65097000,
    GDP_Agriculture: 0.007,
    GDP_Industry: 0.21,
    GDP_Services: 0.783,
    GDP_Total: 2945146,
  },
];
    
    <!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>
    
    #grid sup {
  font-size: 0.8em;
  vertical-align: super;
  line-height: 0;
}
#long-title h3 {
  font-family: 'Segoe UI Light', 'Helvetica Neue Light', 'Segoe UI', 'Helvetica Neue', 'Trebuchet MS', Verdana;
  font-weight: 200;
  font-size: 28px;
  text-align: center;
  margin-bottom: 20px;
}