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This sample demonstrates how to change (add, remove) chart series.

For detailed implementation, please take a look at the HTML code tab.
 
<!DOCTYPE html>
<html>
<head>
    <title>Change Chart Series Example - JavaScript Chart by dvxCharts</title>
    <link rel="stylesheet" type="text/css" href="../../css/dvxCharts.chart.min.css" />
    <link rel="stylesheet" type="text/css" href="../../themes/base/styles.css" />
    <script src="../../js/dvxCharts.chart.min.js" type="text/javascript"></script>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <style>
        .example-container {
            width: 100%;
            max-width: 500px;
            height: 300px;
        }
    </style>
    
    <script lang="javascript" type="text/javascript">
        function getRandomData() {
            var data = [];

            for (var i = 0; i < 20; i++) {
                data.push([i, Math.round(Math.random() * 100)]);
            }

            return data;
        }

        var state = {
            title: {
                text: 'Change Series'
            },
            legend: {
                visible: false
            },
            axes: [
                {
                    location: 'bottom',
                    minimum: 0,
                    maximum: 20
                },
                {
                    location: 'left',
                    minimum: 0,
                    maximum: 100
                }
            ],
            series: [
                {
                    type: 'line',
                    data: getRandomData()
                }
            ]
        };

        var chart = new dvxCharts.Chart(state);
        chart.write('container');

        function addSeries() {

            var newSeries = {
                type: 'line',
                data: getRandomData()
            };

            state.series.push(newSeries);

            chart.setState(state);
        }

        function removeSeries() {

            // remove the last series
            state.series.splice(state.series.length - 1, 1);

            chart.setState(state);
        }
    </script>

</head>
<body>
    <div id="container" class="example-container">
    </div>
    <br />
    <input id="buttonAddSeries" type="button" value="Add new series" onclick="addSeries()" />
    <input id="buttonRemoveSeries" type="button" value="Remove last series" onclick="removeSeries()" />
    <br />
</body>
</html>