How to change the icon when hovering over an element outside the map?

Question

JavaScript

List of companies on the left, map on the right.
When hovering over a company, a marker should be highlighted on the map.
How to change the icon when hovering on the map is understandable, but how to do it outside the map?
I smoke the documentation and look for similar examples, but something is still in vain...

Answer 1

jsfiddle.net/n8k5L7z3