How do I update an external DIV when a user swipes the finger along an Highcharts Area graph?

Question

I am creating an Area Chart with HighCharts and I need to update a div with several values from the chart when a user swipes the finger across the graph.

The values from the chart must be consistent with the values shown on the tooltip.

Is there a specific event I can use for this?

Here is an example:

 Highcharts.chart('container', { chart: { type: 'area' }, title: { text: 'US and USSR nuclear stockpiles' }, subtitle: { text: 'Sources: <a href="https://thebulletin.org/2006/july/global-nuclear-stockpiles-1945-2006">' + 'thebulletin.org</a> &amp; <a href="https://www.armscontrol.org/factsheets/Nuclearweaponswhohaswhat">' + 'armscontrol.org</a>' }, xAxis: { allowDecimals: false, labels: { formatter: function () { return this.value; // clean, unformatted number for year } } }, yAxis: { title: { text: 'Nuclear weapon states' }, labels: { formatter: function () { return this.value / 1000 + 'k'; } } }, tooltip: { pointFormat: '{series.name} had stockpiled <b>{point.y:,.0f}</b><br/>warheads in {point.x}' }, plotOptions: { area: { pointStart: 1940, marker: { enabled: false, symbol: 'circle', radius: 2, states: { hover: { enabled: true } } } } }, series: [{ name: 'USA', data: [ null, null, null, null, null, 6, 11, 32, 110, 235, 369, 640, 1005, 1436, 2063, 3057, 4618, 6444, 9822, 15468, 20434, 24126, 27387, 29459, 31056, 31982, 32040, 31233, 29224, 27342, 26662, 26956, 27912, 28999, 28965, 27826, 25579, 25722, 24826, 24605, 24304, 23464, 23708, 24099, 24357, 24237, 24401, 24344, 23586, 22380, 21004, 17287, 14747, 13076, 12555, 12144, 11009, 10950, 10871, 10824, 10577, 10527, 10475, 10421, 10358, 10295, 10104, 9914, 9620, 9326, 5113, 5113, 4954, 4804, 4761, 4717, 4368, 4018 ] }, { name: 'USSR/Russia', data: [null, null, null, null, null, null, null, null, null, null, 5, 25, 50, 120, 150, 200, 426, 660, 869, 1060, 1605, 2471, 3322, 4238, 5221, 6129, 7089, 8339, 9399, 10538, 11643, 13092, 14478, 15915, 17385, 19055, 21205, 23044, 25393, 27935, 30062, 32049, 33952, 35804, 37431, 39197, 45000, 43000, 41000, 39000, 37000, 35000, 33000, 31000, 29000, 27000, 25000, 24000, 23000, 22000, 21000, 20000, 19000, 18000, 18000, 17000, 16000, 15537, 14162, 12787, 12600, 11400, 5500, 4512, 4502, 4502, 4500, 4500 ] }] }); 

 .detail-container { border:1px solid #000; margin:10px; text-align:center; padding:10px; } 

 <script src="https://code.highcharts.com/highcharts.js"></script> <script src="https://code.highcharts.com/modules/exporting.js"></script> <script src="https://code.highcharts.com/modules/export-data.js"></script> <div class="detail-container"> <div class="detail-value"> Value from Graph Here </div> </div> <div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div> 

Answer 1

You can use a mouseOver event to change the <div> content in such a way that it contains all information from the tooltip:

plotOptions: {
    area: {
        point: {
            events: {
                mouseOver: function() {
                    document.getElementById('customTooltip').innerHTML = 
                        this.series.name + ' had stockpiled <b>' + this.y + 
                        '</b><br/>warheads in ' + this.x
                }
            }
        },
        ...
    }
}

Live demo: http://jsfiddle.net/BlackLabel/3my5pdot/

API Reference: https://api.highcharts.com/highcharts/plotOptions.area.point.events.mouseOver