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Highlight Clicked Line Chart Segments

Environment

Product Version 2018.1 221
Product Chart for Progress® Kendo UI®

Description

How can I highlight the clicked line in the Kendo UI Line Chart?

Solution

Handle the seriesClick event—in the event handler, add a custom style class to the desired HTML elements.

<style>
    .myClass {
        stroke: #08ffff;
        stroke-width: 4;
    }
</style>
<div id="example">
    <div class="demo-section k-content wide">
        <div id="chart" style="background: center no-repeat url('../content/shared/styles/world-map.png');"></div>
    </div>
    <script>
        function createChart() {
            $("#chart").kendoChart({
                title: {
                    text: "Gross domestic product growth \n /GDP annual %/"
                },
                legend: {
                    position: "bottom"
                },
                chartArea: {
                    background: ""
                },
                seriesDefaults: {
                    type: "line",
                    style: "smooth"
                },
                series: [{
                    name: "India",
                    data: [3.907, 7.943, 7.848, 9.284, 9.263, 9.801, 3.890, 8.238, 9.552, 6.855]
                }, {
                    name: "World",
                    data: [1.988, 2.733, 3.994, 3.464, 4.001, 3.939, 1.333, -2.245, 4.339, 2.727]
                }, {
                    name: "Russian Federation",
                    data: [4.743, 7.295, 7.175, 6.376, 8.153, 8.535, 5.247, -7.832, 4.3, 4.3]
                }, {
                    name: "Haiti",
                    data: [-0.253, 0.362, -3.519, 1.799, 2.252, 3.343, 0.843, 2.877, -5.416, 5.590]
                }],
                valueAxis: {
                    labels: {
                        format: "{0}%"
                    },
                    line: {
                        visible: false
                    },
                    axisCrossingValue: -10
                },
                categoryAxis: {
                    categories: [2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011],
                    majorGridLines: {
                        visible: false
                    },
                    labels: {
                        rotation: "auto"
                    }
                },
                tooltip: {
                    visible: true,
                    format: "{0}%",
                    template: "#= series.name #: #= value #"
                },
                seriesClick: function(e) {
                    $(".myClass").removeClass("myClass");
                    var color = $(e.element).attr("fill");
                    var path = $(e.element).siblings().find("path[stroke='" + color + "']");
                    path.addClass("myClass");
                }
            });
        }

        $(document).ready(createChart);
        $(document).bind("kendo:skinChange", createChart);
    </script>
</div>

See Also

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