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Backend API
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import React, { useCallback, useState } from 'react';import SelectBox, { type SelectBoxTypes } from 'devextreme-react/select-box';import { PolarChart, CommonSeriesSettings, Series, Margin,} from 'devextreme-react/polar-chart';import { types, dataSource, seriesTypeLabel } from './data.ts';function App() { const [currentType, setCurrentType] = useState(types[0]); const handleChange = useCallback((e: SelectBoxTypes.ValueChangedEvent) => { setCurrentType(e.value); }, [setCurrentType]); return ( <React.Fragment> <div className="long-title"> <h3>Average temperature in London</h3> </div> <div id="chart-demo"> <PolarChart id="radarChart" dataSource={dataSource} > <CommonSeriesSettings type={currentType} /> <Series valueField="day" name="Day" color="#ba4d51" /> <Series valueField="night" name="Night" color="#5f8b95" /> <Margin top={50} bottom={50} left={100} /> </PolarChart> <div className="center"> <div>Series Type</div> <SelectBox width={200} inputAttr={seriesTypeLabel} dataSource={types} value={currentType} onValueChanged={handleChange} /> </div> </div> </React.Fragment> );}export default App;xxxxxxxxxximport React, { useCallback, useState } from 'react';import SelectBox from 'devextreme-react/select-box';import { PolarChart, CommonSeriesSettings, Series, Margin,} from 'devextreme-react/polar-chart';import { types, dataSource, seriesTypeLabel } from './data.js';function App() { const [currentType, setCurrentType] = useState(types[0]); const handleChange = useCallback( (e) => { setCurrentType(e.value); }, [setCurrentType], ); return ( <React.Fragment> <div className="long-title"> <h3>Average temperature in London</h3> </div> <div id="chart-demo"> <PolarChart id="radarChart" dataSource={dataSource} > <CommonSeriesSettings type={currentType} /> <Series valueField="day" name="Day" color="#ba4d51" /> <Series valueField="night" name="Night" color="#5f8b95" /> <Margin top={50} bottom={50} left={100} /> </PolarChart> <div className="center"> <div>Series Type</div> <SelectBox width={200} inputAttr={seriesTypeLabel} dataSource={types} value={currentType} onValueChanged={handleChange} /> </div> </div> </React.Fragment> );}export default App;xxxxxxxxxximport React from 'react';import ReactDOM from 'react-dom';import App from './App.tsx';ReactDOM.render( <App />, document.getElementById('app'),);xxxxxxxxxximport { Properties as PolarChartPropsType } from 'devextreme/viz/polar_chart';export const types: (PolarChartPropsType['commonSeriesSettings']['type'])[] = ['scatter', 'line', 'area', 'bar', 'stackedbar'];export const dataSource = [{ arg: 'January', day: 6, night: 2,}, { arg: 'February', day: 7, night: 2,}, { arg: 'March', day: 10, night: 3,}, { arg: 'April', day: 14, night: 5,}, { arg: 'May', day: 18, night: 8,}, { arg: 'June', day: 21, night: 11,}, { arg: 'July', day: 22, night: 13,}, { arg: 'August', day: 22, night: 13,}, { arg: 'September', day: 19, night: 11,}, { arg: 'October', day: 15, night: 8,}, { arg: 'November', day: 10, night: 5,}, { arg: 'December', day: 7, night: 3,}];export const seriesTypeLabel = { 'aria-label': 'Series Type' };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 ReactDOM from 'react-dom';import App from './App.js';ReactDOM.render(<App />, document.getElementById('app'));xxxxxxxxxxexport const types = ['scatter', 'line', 'area', 'bar', 'stackedbar'];export const dataSource = [ { arg: 'January', day: 6, night: 2, }, { arg: 'February', day: 7, night: 2, }, { arg: 'March', day: 10, night: 3, }, { arg: 'April', day: 14, night: 5, }, { arg: 'May', day: 18, night: 8, }, { arg: 'June', day: 21, night: 11, }, { arg: 'July', day: 22, night: 13, }, { arg: 'August', day: 22, night: 13, }, { arg: 'September', day: 19, night: 11, }, { arg: 'October', day: 15, night: 8, }, { arg: 'November', day: 10, night: 5, }, { arg: 'December', day: 7, night: 3, },];export const seriesTypeLabel = { 'aria-label': 'Series Type' };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: 600px;}#radarChart { height: 500px;}#chart-demo > .center { text-align: center;}#chart-demo > .center > div,#chart-demo > .center > .dx-widget { display: inline-block; vertical-align: middle;}.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;}