https://ibb.co/DVhwZbX
PLEASE REFER TO THIS IMAGE.
Here I am using highstock.
The thing I want to achieve here is when I mouse over on bands I want to append a new line (maybe a <span>) to the tooltip that is already showing values for different series present there. FYI, I am using formatter function of tooltip to show that.
I am not able to find how xAxis.plotBands.events.mouseover:funtion(band){} must be implemented to get from and to of the band and show it to tooltip in a new line.