DevExtreme Accessibility Compliance
DevExtreme component libraries meet a variety of WCAG and Section 508 compliance standards. To assess this demo's accessibility level, click the Run AXE® Validation button to launch the AXE® web accessibility evaluation tool.
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The overall accessibility level of your application depends on the Charts features used.
Backend API
import React from 'react';
import Chart, {
ArgumentAxis,
CommonSeriesSettings,
Legend,
Series,
Tooltip,
ValueAxis,
ConstantLine,
Label,
} from 'devextreme-react/chart';
import type { ChartTypes } from 'devextreme-react/chart';
import { complaintsData } from './data.ts';
const data = complaintsData.sort((a, b) => b.count - a.count);
const totalCount = data.reduce((prevValue, item) => prevValue + item.count, 0);
let cumulativeCount = 0;
const dataArray = data.map((item) => {
cumulativeCount += item.count;
return {
complaint: item.complaint,
count: item.count,
cumulativePercentage: Math.round((cumulativeCount * 100) / totalCount),
};
});
const customizeTooltip = (pointInfo: ChartTypes.CommonPointInfo): Record<string, string> => ({
html: `<div><div class="tooltip-header">${
pointInfo.argumentText
}</div><div class="tooltip-body"><div class="series-name"><span class='top-series-name'>${
pointInfo.points?.[0]?.seriesName
}</span>: </div><div class="value-text"><span class='top-series-value'>${
pointInfo.points?.[0]?.valueText
}</span></div><div class="series-name"><span class='bottom-series-name'>${
pointInfo.points?.[1]?.seriesName
}</span>: </div><div class="value-text"><span class='bottom-series-value'>${
pointInfo.points?.[1]?.valueText
}</span>% </div></div></div>`,
});
function customizePercentageText({ valueText }: { valueText: string }): string {
return `${valueText}%`;
}
function App() {
return (
<Chart
title="Pizza Shop Complaints"
dataSource={dataArray}
palette="Harmony Light"
id="chart"
>
<CommonSeriesSettings argumentField="complaint" />
<Series
name="Complaint frequency"
valueField="count"
axis="frequency"
type="bar"
color="#fac29a"
/>
<Series
name="Cumulative percentage"
valueField="cumulativePercentage"
axis="percentage"
type="spline"
color="#6b71c3"
/>
<ArgumentAxis>
<Label overlappingBehavior="stagger" />
</ArgumentAxis>
<ValueAxis name="frequency" position="left" tickInterval={300} />
<ValueAxis
name="percentage"
position="right"
tickInterval={20}
showZero={true}
valueMarginsEnabled={false}
>
<Label customizeText={customizePercentageText} />
<ConstantLine value={80} width={2} color="#fc3535" dashStyle="dash">
<Label visible={false} />
</ConstantLine>
</ValueAxis>
<Tooltip enabled={true} shared={true} customizeTooltip={customizeTooltip} />
<Legend verticalAlignment="top" horizontalAlignment="center" />
</Chart>
);
}
export default App;
import React from 'react';
import Chart, {
ArgumentAxis,
CommonSeriesSettings,
Legend,
Series,
Tooltip,
ValueAxis,
ConstantLine,
Label,
} from 'devextreme-react/chart';
import { complaintsData } from './data.js';
const data = complaintsData.sort((a, b) => b.count - a.count);
const totalCount = data.reduce((prevValue, item) => prevValue + item.count, 0);
let cumulativeCount = 0;
const dataArray = data.map((item) => {
cumulativeCount += item.count;
return {
complaint: item.complaint,
count: item.count,
cumulativePercentage: Math.round((cumulativeCount * 100) / totalCount),
};
});
const customizeTooltip = (pointInfo) => ({
html: `<div><div class="tooltip-header">${pointInfo.argumentText}</div><div class="tooltip-body"><div class="series-name"><span class='top-series-name'>${pointInfo.points?.[0]?.seriesName}</span>: </div><div class="value-text"><span class='top-series-value'>${pointInfo.points?.[0]?.valueText}</span></div><div class="series-name"><span class='bottom-series-name'>${pointInfo.points?.[1]?.seriesName}</span>: </div><div class="value-text"><span class='bottom-series-value'>${pointInfo.points?.[1]?.valueText}</span>% </div></div></div>`,
});
function customizePercentageText({ valueText }) {
return `${valueText}%`;
}
function App() {
return (
<Chart
title="Pizza Shop Complaints"
dataSource={dataArray}
palette="Harmony Light"
id="chart"
>
<CommonSeriesSettings argumentField="complaint" />
<Series
name="Complaint frequency"
valueField="count"
axis="frequency"
type="bar"
color="#fac29a"
/>
<Series
name="Cumulative percentage"
valueField="cumulativePercentage"
axis="percentage"
type="spline"
color="#6b71c3"
/>
<ArgumentAxis>
<Label overlappingBehavior="stagger" />
</ArgumentAxis>
<ValueAxis
name="frequency"
position="left"
tickInterval={300}
/>
<ValueAxis
name="percentage"
position="right"
tickInterval={20}
showZero={true}
valueMarginsEnabled={false}
>
<Label customizeText={customizePercentageText} />
<ConstantLine
value={80}
width={2}
color="#fc3535"
dashStyle="dash"
>
<Label visible={false} />
</ConstantLine>
</ValueAxis>
<Tooltip
enabled={true}
shared={true}
customizeTooltip={customizeTooltip}
/>
<Legend
verticalAlignment="top"
horizontalAlignment="center"
/>
</Chart>
);
}
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
export const complaintsData = [
{ complaint: 'Cold pizza', count: 780 },
{ complaint: 'Not enough cheese', count: 120 },
{ complaint: 'Underbaked or Overbaked', count: 52 },
{ complaint: 'Delayed delivery', count: 1123 },
{ complaint: 'Damaged pizza', count: 321 },
{ complaint: 'Incorrect billing', count: 89 },
{ complaint: 'Wrong size delivered', count: 222 },
];
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
export const complaintsData = [
{ complaint: 'Cold pizza', count: 780 },
{ complaint: 'Not enough cheese', count: 120 },
{ complaint: 'Underbaked or Overbaked', count: 52 },
{ complaint: 'Delayed delivery', count: 1123 },
{ complaint: 'Damaged pizza', count: 321 },
{ complaint: 'Incorrect billing', count: 89 },
{ complaint: 'Wrong size delivered', count: 222 },
];
<!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/26.1.5/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="./bundle.css" />
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
<script src="bundles/vendor/react.vendor.js"></script>
<script src="./bundle.js"></script>
</body>
</html>
#chart {
height: 440px;
}
.tooltip-header {
margin-bottom: 5px;
font-size: 16px;
font-weight: 500;
padding-bottom: 5px;
border-bottom: 1px solid #c5c5c5;
}
.tooltip-body {
width: 170px;
}
.tooltip-body .series-name {
font-weight: normal;
opacity: 0.6;
display: inline-block;
line-height: 1.5;
padding-right: 10px;
width: 126px;
}
.tooltip-body .value-text {
display: inline-block;
line-height: 1.5;
width: 30px;
}
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