React Data Grid - Infinite Scrolling

import React from 'react'; import DataGrid, { Scrolling, Sorting, LoadPanel } from 'devextreme-react/data-grid'; import { generateData } from './data.js'; const dataSource = generateData(100000); const customizeColumns = (columns) => { columns[0].width = 70; }; const App = () => ( <DataGrid height={440} dataSource={dataSource} keyExpr="id" showBorders={true} customizeColumns={customizeColumns} > <Sorting mode="none" /> <Scrolling mode="infinite" /> <LoadPanel enabled={false} /> </DataGrid> ); export default App;

import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.tsx'; ReactDOM.render( <App />, document.getElementById('app'), );

let s = 123456789; function random() { s = (1103515245 * s + 12345) % 2147483647; return s % (10 - 1); } export function generateData(count: number) { let i; const surnames = ['Smith', 'Johnson', 'Brown', 'Taylor', 'Anderson', 'Harris', 'Clark', 'Allen', 'Scott', 'Carter']; const names = ['James', 'John', 'Robert', 'Christopher', 'George', 'Mary', 'Nancy', 'Sandra', 'Michelle', 'Betty']; const gender = ['Male', 'Female']; const items: ({ id: number; firstName: string; lastName: string; gender: string; birthDate: Date; })[] = []; const startBirthDate = Date.parse('1/1/1975'); const endBirthDate = Date.parse('1/1/1992'); for (i = 0; i < count; i += 1) { const birthDate = new Date(startBirthDate + Math.floor( (random() * (endBirthDate - startBirthDate)) / 10, )); birthDate.setHours(12); const nameIndex = random(); const item = { id: i + 1, firstName: names[nameIndex], lastName: surnames[random()], gender: gender[Math.floor(nameIndex / 5)], birthDate, }; items.push(item); } return items; }

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@25.1.3/cjs', 'devextreme-react': 'npm:devextreme-react@25.1.3/cjs', 'devextreme-quill': 'npm:devextreme-quill@1.7.3/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.19/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.62/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);

import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.js'; ReactDOM.render(<App />, document.getElementById('app'));

let s = 123456789; function random() { s = (1103515245 * s + 12345) % 2147483647; return s % (10 - 1); } export function generateData(count) { let i; const surnames = [ 'Smith', 'Johnson', 'Brown', 'Taylor', 'Anderson', 'Harris', 'Clark', 'Allen', 'Scott', 'Carter', ]; const names = [ 'James', 'John', 'Robert', 'Christopher', 'George', 'Mary', 'Nancy', 'Sandra', 'Michelle', 'Betty', ]; const gender = ['Male', 'Female']; const items = []; const startBirthDate = Date.parse('1/1/1975'); const endBirthDate = Date.parse('1/1/1992'); for (i = 0; i < count; i += 1) { const birthDate = new Date( startBirthDate + Math.floor((random() * (endBirthDate - startBirthDate)) / 10), ); birthDate.setHours(12); const nameIndex = random(); const item = { id: i + 1, firstName: names[nameIndex], lastName: surnames[random()], gender: gender[Math.floor(nameIndex / 5)], birthDate, }; items.push(item); } return items; }

<!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/25.1.3/css/dx.light.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> <link rel="stylesheet" type="text/css" href="styles.css" /> <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>