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() constructor creates a new InterestEvent object.
new InterestEvent(type, init)typeA string representing the type of event. For InterestEvent, this is always interest or loseinterest.
init OptionalAn object containing the following property:
source OptionalAn Element representing the interest invoker element on which interest was shown or lost.
Normally, you would not use this constructor manually. A new InterestEvent object is constructed when a handler is invoked as a result of a relevant event firing.
See the Using interest invokers guide and the interest event reference page for examples.