DevExtreme v24.1 is now available.

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Tooltip and Legend

This demo shows how to enable and customize tooltips in 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, set the tooltip.enabled property to true. In this demo, the text displayed by the tooltips is customized.

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" 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" /> <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/24.1.3/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%; }