Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
The InterestEvent interface represents an event that fires when interest is shown or lost on an interest invoker.
This is the event object for the interest and loseinterest events, which fire on the target element when interest is shown or lost, respectively.
InterestEvent() Creates an InterestEvent object.
This interface inherits properties from its parent, Event.
InterestEvent.source Read only An Element object instance that represents the interest invoker element on which interest was shown or lost to fire the event.
See the Using interest invokers guide and the interest event reference page for examples.