Ajax loaded data, clickable points

author(s): Torstein Hønsi

by Dongor7

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/data.js"></script>
<script src="https://code.highcharts.com/modules/series-label.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script>
<script src="https://code.highcharts.com/modules/accessibility.js"></script>

<figure class="highcharts-figure">
    <div id="container"></div>
    <p class="highcharts-description">
        Chart showing data loaded dynamically. The individual data points can
        be clicked to display more information.
    </p>
</figure>

CSS

.highcharts-figure, .highcharts-data-table table {
    min-width: 360px; 
    max-width: 800px;
    margin: 1em auto;
}

.highcharts-data-table table {
	font-family: Verdana, sans-serif;
	border-collapse: collapse;
	border: 1px solid #EBEBEB;
	margin: 10px auto;
	text-align: center;
	width: 100%;
	max-width: 500px;
}
.highcharts-data-table caption {
    padding: 1em 0;
    font-size: 1.2em;
    color: #555;
}
.highcharts-data-table th {
	font-weight: 600;
    padding: 0.5em;
}
.highcharts-data-table td, .highcharts-data-table th, .highcharts-data-table caption {
    padding: 0.5em;
}
.highcharts-data-table thead tr, .highcharts-data-table tr:nth-child(even) {
    background: #f8f8f8;
}
.highcharts-data-table tr:hover {
    background: #f1f7ff;
}

JavaScript

// A point click event that uses the Renderer to draw a label next to the point
// On subsequent clicks, move the existing label instead of creating a new one.
Highcharts.addEvent(Highcharts.Point, 'click', function () {
    if (this.series.options.className.indexOf('popup-on-click') !== -1) {
        const chart = this.series.chart;
        const date = Highcharts.dateFormat('%A, %b %e, %Y', this.x);
        const text = `<b>${date}</b><br/>${this.y} ${this.series.name}`;

        const anchorX = this.plotX + this.series.xAxis.pos;
        const anchorY = this.plotY + this.series.yAxis.pos;
        const align = anchorX < chart.chartWidth - 200 ? 'left' : 'right';
        const x = align === 'left' ? anchorX + 10 : anchorX - 10;
        const y = anchorY - 30;
        if (!chart.sticky) {
            chart.sticky = chart.renderer
                .label(text, x, y, 'callout',  anchorX, anchorY)
                .attr({
                    align,
                    fill: 'rgba(0, 0, 0, 0.75)',
                    padding: 10,
                    zIndex: 7 // Above series, below tooltip
                })
                .css({
                    color: 'white'
                })
                .on('click', function () {
                    chart.sticky = chart.sticky.destroy();
                })
                .add();
        } else {
            chart.sticky
                .attr({ align, text })
                .animate({ anchorX, anchorY, x, y }, { duration: 250 });
        }
    }
});


Highcharts.chart('container', {

    chart: {
        scrollablePlotArea: {
            minWidth: 700
        }
    },

    data: {
        csvURL: 'https://cdn.jsdelivr.net/gh/highcharts/[email protected]/samples/data/analytics.csv',
        beforeParse: function (csv) {
            return csv.replace(/\n\n/g, '\n');
        }
    },

    title: {
        text: 'Daily sessions at www.highcharts.com'
    },

    subtitle: {
        text: 'Source: Google Analytics'
    },

 ...