itemClick property
dynamic
itemClick
getter/setter pair
Fires when the legend item belonging to the series is clicked. One
parameter, event, is passed to the function. The default action
is to toggle the visibility of the series, point or data class. This
can be prevented by returning false or calling
event.preventDefault().
API Docs: https://api.highcharts.com/highcharts/legend.events.itemClick
Implementation
dynamic itemClick;