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.
en.wikipedia.org
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var DemoApp = angular.module('DemoApp', ['dx']);
DemoApp.controller('DemoController', function DemoController($scope) {
$scope.pieChartOptions = {
palette: "bright",
dataSource: states,
title: "Top 10 Most Populated States in US",
series: {
argumentField: "name",
valueField: "population"
},
"export": {
enabled: true
},
tooltip: {
enabled: true,
contentTemplate: function(info, $container) {
var container = $container[0];
container.innerHTML = ["<div class='state-tooltip'><img src='../../../../images/flags/" +
info.point.data.name.replace(/\s/, "") + ".svg' />",
"<h4 class='state'></h4>",
"<div class='capital'><span class='caption'>Capital</span>: </div>",
"<div class='population'><span class='caption'>Population</span>: </div>",
"<div><span class='caption'>Area</span>: ",
"<span class='area-km'></span> km<sup>2</sup> (",
"<span class='area-mi'></span> mi<sup>2</sup>)",
"</div></div>"
].join("");
container.querySelector(".state").textContent = info.argument;
container.querySelector(".capital").append(document.createTextNode(info.point.data.capital));
container.querySelector(".population").append(document.createTextNode(formatNumber(info.value) + " people"));
container.querySelector(".area-km").textContent = formatNumber(info.point.data.area);
container.querySelector(".area-mi").textContent = formatNumber(0.3861 * info.point.data.area);
}
}
};
});
var formatNumber = new Intl.NumberFormat("en-US", { maximumFractionDigits: 0 }).format;
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" >
<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" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script>
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.light.css" />
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.16/angular.min.js"></script>
<script>window.angular || document.write(decodeURIComponent('%3Cscript src="js/angular.min.js"%3E%3C/script%3E'))</script>
<script src="https://cdn3.devexpress.com/jslib/20.2.6/js/dx.all.js"></script>
<script src="data.js"></script>
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="index.js"></script>
</head>
<body class="dx-viewport">
<div class="demo-container" ng-app="DemoApp" ng-controller="DemoController">
<div id="pie-chart" dx-pie-chart="pieChartOptions"></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;
}
var states = [{
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
}];