I have created a webpage with multiple charts using D3 and Object Oriented Programming.

Working code --> https://codepen.io/mohan-ys/pen/rNwKNdj

I have tried to add mouseover effect to the charts. However, as you can see the vertical line appears on only one chart but the bubbles on all the charts.

I would like to

1. Have the vertical line on all the charts moving also with the mouse (lines on all chart was not in my plan but it looks cool so, I want to try it).
2. Have the mouseover effect on only the chart that I move the mouse over. Currently, irrespective of which chart the mouse moves on all charts are exhibiting the mouseover effect.