2👍
Note that in above script, the author define highlight
as a custom methods:
Highcharts.Point.prototype.highlight = function (event) {
this.onMouseOver(); // Show the hover marker
this.series.chart.tooltip.refresh(this); // Show the tooltip
this.series.chart.xAxis[0].drawCrosshair(event, this); // Show the crosshair
};
Source:stackexchange.com