Tooltips: HTML Markup Support

To set the tooltip's content, specify the contentTemplate. Inside the template, you can identify the chart series point for which the tooltip is displayed and thus display information related to that point.

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Backend API

import React from 'react'; import PieChart, { Series, Tooltip, Export, } from 'devextreme-react/pie-chart'; import { populationData } from './data.js'; import TooltipTemplate from './TooltipTemplate.js'; function App() { return ( <PieChart id="pie-chart" dataSource={populationData} title="Top 10 Most Populated States in US" palette="Bright" > <Series argumentField="name" valueField="population" /> <Tooltip enabled={true} contentRender={TooltipTemplate} /> <Export enabled={true} /> </PieChart> ); } export default App;

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

<!DOCTYPE html> <html> <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=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/23.1.5/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import("./index.js"); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body> </html>

#pie-chart { height: 440px; } .state-tooltip { height: 90px; } .state-tooltip > img { width: 60px; height: 40px; display: block; margin: 0 5px 0 0; float: left; border: 1px solid rgba(191, 191, 191, 0.25); } .state-tooltip > h4 { line-height: 40px; font-size: 14px; margin-bottom: 5px; } .state-tooltip .caption { font-weight: 500; } .state-tooltip sup { font-size: 0.8em; vertical-align: super; line-height: 0; }

import React from 'react'; function getImagePath(point) { return `../../../../images/flags/${point.data.name.replace(/\s/, '')}.svg`; } const formatNumber = new Intl.NumberFormat('en-US', { maximumFractionDigits: 0, }).format; export default function TooltipTemplate(info) { return ( <div className="state-tooltip"> <img src={getImagePath(info.point)} /><h4 className="state">{info.argument}</h4> <div className="capital"> <span className="caption">Capital</span>: {info.point.data.capital} </div> <div className="population"> <span className="caption">Population</span>: {formatNumber(info.value)} people </div> <div> <span className="caption">Area</span>: <span className="area-km">{formatNumber(info.point.data.area)}</span> km<sup>2</sup> (<span className="area-mi">{formatNumber(0.3861 * info.point.data.area)}</span> mi<sup>2</sup>) </div> </div> ); }

export const populationData = [{ name: 'California', population: 38802500, capital: 'Sacramento', area: 423967, }, { name: 'Texas', population: 26956958, capital: 'Austin', area: 695662, }, { name: 'Florida', population: 19893297, capital: 'Tallahassee', area: 170312, }, { name: 'New York', population: 19746227, capital: 'Albany', area: 141297, }, { name: 'Illinois', population: 12880580, capital: 'Springfield', area: 149995, }, { name: 'Pennsylvania', population: 12787209, capital: 'Harrisburg', area: 119280, }, { name: 'Ohio', population: 11594163, capital: 'Columbus', area: 116098, }, { name: 'Georgia', population: 10097343, capital: 'Atlanta', area: 153910, }, { name: 'North Carolina', population: 9943964, capital: 'Raleigh', area: 139391, }, { name: 'Michigan', population: 9909877, capital: 'Lansing', area: 250487, }];