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    Circular Gauge

    Value Indicators API

    Documentation

    This demo shows how to use the API of the CircularGauge to change its value and subvalue indicators at runtime. To get and set the values of the indicators, the value and subvalues methods are utilized.

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    window.onload = function () { const mainGenerator = ko.observable(34); const subvalueOne = ko.observable(12); const subvalueTwo = ko.observable(23); const value = ko.observable(34); const subvalues = ko.observable([12, 23]); const viewModel = { gaugeOptions: { scale: { startValue: 10, endValue: 40, tickInterval: 5, label: { customizeText(arg) { return `${arg.valueText} kV`; }, }, }, tooltip: { enabled: true }, title: { text: 'Generators Voltage (kV)', font: { size: 28 }, }, subvalues, value, }, mainGeneratorOptions: { value: mainGenerator, min: 10, max: 40, width: 100, showSpinButtons: true, }, additionalGeneratorOne: { value: subvalueOne, min: 10, max: 40, width: 100, showSpinButtons: true, }, additionalGeneratorTwo: { value: subvalueTwo, min: 10, max: 40, width: 100, showSpinButtons: true, }, editButton: { text: 'Apply', width: 100, onClick() { value(mainGenerator()); subvalues([subvalueOne(), subvalueTwo()]); }, }, }; ko.applyBindings(viewModel, document.getElementById('gauge-demo')); };
    <!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> <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.1.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/22.1.3/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/22.1.3/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-demo"> <div class="widget-container"> <div id="gauge" data-bind="dxCircularGauge: gaugeOptions"></div> </div> <div class="options"> <div class="caption">Options</div> <div class="option"> <span>Main generator</span> <div data-bind="dxNumberBox: mainGeneratorOptions"></div> </div> <div class="option"> <span>Additional generator 1</span> <div data-bind="dxNumberBox: additionalGeneratorOne"></div> </div> <div class="option"> <span>Additional generator 2</span> <div data-bind="dxNumberBox: additionalGeneratorTwo"></div> </div> <div class="option"> <div data-bind="dxButton: editButton"></div> </div> </div> </div> </div> </body> </html>
    .widget-container { margin-right: 320px; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); position: absolute; right: 0; top: 0; bottom: 0; width: 260px; } .caption { font-size: 18px; font-weight: 500; } .option { margin-top: 10px; display: flex; align-items: center; justify-content: space-between; } #edit { margin-left: auto; }