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Editorial Team
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Asked: 2026-05-27T11:29:47+00:00

I need to handle the onclick event over a Gauge. I don’t have found

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I need to handle the onclick event over a Gauge. I don’t have found an example for register events over Gauges on the Google Chart documentation.

I have tried the following:

<html>
    <head>
        <script type="text/javascript" src="https://www.google.com/jsapi"></script>
        <script type="text/javascript">
            google.load("visualization", "1", {packages:["corechart","gauge"]});
            google.setOnLoadCallback(drawChart);
            function drawChart() {
                var data = new google.visualization.DataTable();
                data.addColumn('string', 'LABEL');
                data.addColumn('number', 'TOTAL');
                data.addRows(1);
                data.setValue(0, 0, 'Speed');
                data.setValue(0, 1, 240);
                var gaugeOptions = {min: 0, max: 280, yellowFrom: 200, yellowTo: 250, title: 'Company Performance', redFrom: 250, redTo: 280, minorTicks: 5};
                var gauge = new google.visualization.Gauge(document.getElementById('gauge_div'));
                gauge.draw(data, gaugeOptions);
                google.visualization.events.addListener(gauge, 'select', function() {
                    alert("Here");
                });
            }
        </script>
    </head>
    <body>
        <div id="gauge_div"></div>
    </body>
</html>

Also I have tried to add onclick event with JQuery to div "gauge_div" but it only works if I make click on the border of div, not over the gauge.

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1 Answer

  1. Editorial Team

    Gauge has no events that it triggers. The chart is rendered in an iframe, which also does not have a click event in the local dom, but rather in the window.document.body of the iframe. A solution I used was to create an empty div relatively positioned on top of the gauge and register the click event on that.

    <html>
    <head>
        <script type="text/javascript" src="https://www.google.com/jsapi"></script>
        <script type="text/javascript">
            google.load("visualization", "1", {packages:["corechart","gauge"]});
            google.setOnLoadCallback(drawChart);
            function drawChart() {
                var data = new google.visualization.DataTable();
                data.addColumn('string', 'LABEL');
                data.addColumn('number', 'TOTAL');
                data.addRows(1);
                data.setValue(0, 0, 'Speed');
                data.setValue(0, 1, 240);
                var gaugeOptions = {min: 0, max: 280, yellowFrom: 200, yellowTo: 250, title: 'Company Performance', redFrom: 250, redTo: 280, minorTicks: 5};
                var gauge = new google.visualization.Gauge(document.getElementById('gauge_div'));
                gauge.draw(data, gaugeOptions);
                google.visualization.events.addListener(gauge, 'select', function() {
                    alert("Here");
                });
            }
        </script>
    </head>
    <body style="position:relative;">
        <div id="gauge_div"></div>
        <div id="gauge_div_clickable" style="position:absolute;z-index:2;top:- 120px;width:120px;height:120px;" onclick="alert('here');">
    </body>
</html>
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