Catch an plotly event from the plot's parent element

The situation is that I have a div and inside I generate more than 20 graphs. I don’t want to create a handler for each graph so I tried attaching the handler to the outside div, but when I used document.getElementById(...).on() I always got document.getElementById(...).on is not a function. So is there anyway that I can avoid adding handler to each individual graph?
P.s: I’m trying to use the plotly_hover event.

Not at the moment unfortunately.