Every object in our DOM can
trigger an event. The object that
triggers our particular event
is called the target:
In the example given above, the p element
is the target for both mouseover and
mouseout events. We listen to these
events on the p element and change
the color of the text depending on
which event was triggered.
The event parameter that we see in
our addEventListener is an event object.
It is automatically passed to all event
handlers. It helps in passing extra information like
the target to the event handler.