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Tooltip and Legend

Documentation

This demo shows how to enable and customize tooltips in the the BarGauge component. A tooltip is a small pop-up rectangle that displays the value of the bar that is currently hovered over. To enable the tooltips, the enabled property is set to true. The text displayed by the tooltips is customized using the customizeText property.

Backend API
$(() => { $('#gauge').dxBarGauge({ startValue: 0, endValue: 200, values: [121.4, 135.4, 115.9, 141.1, 127.5], label: { visible: false }, tooltip: { enabled: true, customizeTooltip(arg) { return { text: getText(arg, arg.valueText), }; }, }, export: { enabled: true, }, title: { text: 'Average Speed by Racer', font: { size: 28, }, }, legend: { visible: true, verticalAlignment: 'bottom', horizontalAlignment: 'center', customizeText(arg) { return getText(arg.item, arg.text); }, }, }); function getText(item, text) { return `Racer ${item.index + 1} - ${text} km/h`; } });
<!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/23.2.4/css/dx.light.css" /> <script src="js/dx.all.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"> <div id="gauge"></div> </div> </body> </html>
#gauge { height: 440px; width: 100%; }