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Backend API
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import React, { useCallback } from 'react';import SelectBox, { type SelectBoxTypes } from 'devextreme-react/select-box';import DataSource from 'devextreme/data/data_source';import CustomStore from 'devextreme/data/custom_store';import RowTemplate from './RowTemplate.tsx';const months = [12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1];const years = ['2010', '2011', '2012'];const monthLabel = { 'aria-label': 'Month' };const dataSource = new DataSource({ store: new CustomStore({ load: () => fetch('data/resourceData.json') .then((e) => e.json()) .catch(() => { throw new Error('Data Loading Error'); }), loadMode: 'raw', }), filter: ['month', '<=', '12'], paginate: false,});function App() { const onValueChanged = useCallback((e: SelectBoxTypes.ValueChangedEvent) => { dataSource.filter(['month', '<=', e.value]); dataSource.load(); }, []); return ( <React.Fragment> <div className="long-title"><h3>Monthly Prices of Aluminium, Nickel and Copper</h3></div> <div id="chart-demo"> <table className="demo-table" style={{ border: 1 }} > <tbody> <tr> <th /> <th>Aluminium (USD/ton)</th> <th>Nickel (USD/ton)</th> <th>Copper (USD/ton)</th> </tr> { years.map((year, index) => <RowTemplate key={index} year={year} source={dataSource} />) } </tbody> </table> <div className="action"> <div className="label">Choose a number of months:</div> <SelectBox id="choose-months" dataSource={months} inputAttr={monthLabel} defaultValue={months[0]} onValueChanged={onValueChanged} /> </div> </div> </React.Fragment> );}export default App;xxxxxxxxxximport React, { useCallback } from 'react';import SelectBox from 'devextreme-react/select-box';import DataSource from 'devextreme/data/data_source';import CustomStore from 'devextreme/data/custom_store';import RowTemplate from './RowTemplate.js';const months = [12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1];const years = ['2010', '2011', '2012'];const monthLabel = { 'aria-label': 'Month' };const dataSource = new DataSource({ store: new CustomStore({ load: () => fetch('data/resourceData.json') .then((e) => e.json()) .catch(() => { throw new Error('Data Loading Error'); }), loadMode: 'raw', }), filter: ['month', '<=', '12'], paginate: false,});function App() { const onValueChanged = useCallback((e) => { dataSource.filter(['month', '<=', e.value]); dataSource.load(); }, []); return ( <React.Fragment> <div className="long-title"> <h3>Monthly Prices of Aluminium, Nickel and Copper</h3> </div> <div id="chart-demo"> <table className="demo-table" style={{ border: 1 }} > <tbody> <tr> <th /> <th>Aluminium (USD/ton)</th> <th>Nickel (USD/ton)</th> <th>Copper (USD/ton)</th> </tr> {years.map((year, index) => ( <RowTemplate key={index} year={year} source={dataSource} /> ))} </tbody> </table> <div className="action"> <div className="label">Choose a number of months:</div> <SelectBox id="choose-months" dataSource={months} inputAttr={monthLabel} defaultValue={months[0]} onValueChanged={onValueChanged} /> </div> </div> </React.Fragment> );}export default App;xxxxxxxxxximport React from 'react';import Sparkline, { Tooltip,} from 'devextreme-react/sparkline';import DataSource from 'devextreme/data/data_source';interface RowTemplateProps { key: number; year: string; source: DataSource;}export default function RowTemplate(props: RowTemplateProps) { return ( <tr> <th>{props.year}</th> <td> <Sparkline dataSource={props.source} showMinMax={true} className="sparkline" argumentField="month" valueField={`alum${props.year}`} type="bar" > <Tooltip format="currency" /> </Sparkline> </td> <td> <Sparkline dataSource={props.source} showMinMax={true} showFirstLast={false} className="sparkline" argumentField="month" valueField={`nickel${props.year}`} type="bar" barPositiveColor="#6babac" minColor="#9ab57e" maxColor="#8076bb" > <Tooltip format="currency" /> </Sparkline> </td> <td> <Sparkline dataSource={props.source} className="sparkline" argumentField="month" valueField={`copper${props.year}`} type="bar" barPositiveColor="#e55253" firstLastColor="#ebdd8f" pointColor="#e8c267" > <Tooltip format="currency" /> </Sparkline> </td> </tr> );}xxxxxxxxxximport React from 'react';import ReactDOM from 'react-dom';import App from './App.tsx';ReactDOM.render( <App />, document.getElementById('app'),);xxxxxxxxxxwindow.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://unpkg.com/', '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@24.2.6/cjs', 'devextreme-react': 'npm:devextreme-react@24.2.6/cjs', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.15/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.60/dist/dx-gantt.js', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12', 'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.11/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', '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/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', 'npm:@devextreme/runtime@3.0.12/inferno/package.json', ], babelOptions: { sourceMaps: false, stage0: true, react: true, },};System.config(window.config);xxxxxxxxxximport React from 'react';import Sparkline, { Tooltip } from 'devextreme-react/sparkline';export default function RowTemplate(props) { return ( <tr> <th>{props.year}</th> <td> <Sparkline dataSource={props.source} showMinMax={true} className="sparkline" argumentField="month" valueField={`alum${props.year}`} type="bar" > <Tooltip format="currency" /> </Sparkline> </td> <td> <Sparkline dataSource={props.source} showMinMax={true} showFirstLast={false} className="sparkline" argumentField="month" valueField={`nickel${props.year}`} type="bar" barPositiveColor="#6babac" minColor="#9ab57e" maxColor="#8076bb" > <Tooltip format="currency" /> </Sparkline> </td> <td> <Sparkline dataSource={props.source} className="sparkline" argumentField="month" valueField={`copper${props.year}`} type="bar" barPositiveColor="#e55253" firstLastColor="#ebdd8f" pointColor="#e8c267" > <Tooltip format="currency" /> </Sparkline> </td> </tr> );}xxxxxxxxxximport React from 'react';import ReactDOM from 'react-dom';import App from './App.js';ReactDOM.render(<App />, document.getElementById('app'));xxxxxxxxxx[ { "month": 1, "alum2010": 2262, "alum2011": 2454, "alum2012": 2262, "nickel2010": 18974, "nickel2011": 24298, "nickel2012": 18322, "copper2010": 7341, "copper2011": 9585, "copper2012": 7501 }, { "month": 2, "alum2010": 2087, "alum2011": 2537, "alum2012": 2087, "nickel2010": 18162, "nickel2011": 27929, "nickel2012": 21093, "copper2010": 7016, "copper2011": 10026, "copper2012": 8470 }, { "month": 3, "alum2010": 2238, "alum2011": 2586, "alum2012": 2238, "nickel2010": 20535, "nickel2011": 28802, "nickel2012": 19701, "copper2010": 7202, "copper2011": 9889, "copper2012": 8591 }, { "month": 4, "alum2010": 2349, "alum2011": 2689, "alum2012": 2349, "nickel2010": 24562, "nickel2011": 26142, "nickel2012": 17695, "copper2010": 7851, "copper2011": 9460, "copper2012": 8459 }, { "month": 5, "alum2010": 2071, "alum2011": 2591, "alum2012": 2071, "nickel2010": 26131, "nickel2011": 26753, "nickel2012": 17549, "copper2010": 7481, "copper2011": 9373, "copper2012": 8320 }, { "month": 6, "alum2010": 1957, "alum2011": 2584, "alum2012": 1957, "nickel2010": 19278, "nickel2011": 23055, "nickel2012": 16436, "copper2010": 6532, "copper2011": 9108, "copper2012": 7465 }, { "month": 7, "alum2010": 2008, "alum2011": 2554, "alum2012": 2008, "nickel2010": 19475, "nickel2011": 22870, "nickel2012": 16382, "copper2010": 6498, "copper2011": 9295, "copper2012": 7475 }, { "month": 8, "alum2010": 2119, "alum2011": 2413, "alum2012": 2119, "nickel2010": 20701, "nickel2011": 24388, "nickel2012": 15687, "copper2010": 7191, "copper2011": 9834, "copper2012": 7430 }, { "month": 9, "alum2010": 2199, "alum2011": 2327, "alum2012": 2199, "nickel2010": 21266, "nickel2011": 21845, "nickel2012": 16085, "copper2010": 7596, "copper2011": 9121, "copper2012": 7614 }, { "month": 10, "alum2010": 2374, "alum2011": 2210, "alum2012": 2374, "nickel2010": 23358, "nickel2011": 18346, "nickel2012": 18250, "copper2010": 8057, "copper2011": 7125, "copper2012": 8245 }, { "month": 11, "alum2010": 2354, "alum2011": 2102, "alum2012": 2354, "nickel2010": 23150, "nickel2011": 18822, "nickel2012": 16083, "copper2010": 8373, "copper2011": 7871, "copper2012": 7727 }, { "month": 12, "alum2010": 2369, "alum2011": 2038, "alum2012": 2369, "nickel2010": 23282, "nickel2011": 17320, "nickel2012": 17104, "copper2010": 8636, "copper2011": 7725, "copper2012": 7880 }]xxxxxxxxxx<html lang="en"> <head></head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body></html>xxxxxxxxxx#chart-demo { height: 440px;}.demo-table { width: 100%; border: 1px solid #c2c2c2; border-collapse: collapse;}.demo-table th,.demo-table td { font-weight: 400; width: 200px; padding: 25px 10px 5px 10px; border: 1px solid #c2c2c2;}.demo-table th { padding: 25px 15px 20px 15px; border: 1px solid #c2c2c2;}.demo-table tr:nth-child(2) td { border-top: 1px solid #c2c2c2;}.demo-table td:first-of-type { border-left: 1px solid #c2c2c2;}.demo-table .sparkline { width: 200px; height: 30px;}.action { width: 300px; margin-top: 20px; display: flex; align-items: center; justify-content: space-between;}.action .dx-selectbox { width: 90px;}.long-title h3 { font-weight: 200; font-size: 28px; text-align: center; margin-bottom: 20px; margin-top: 0;}