The difference between “observer” and “notification” (in the property block) versus “observers” versus “listeners” in “Polymer”

Question

I am trying to understand the difference between an “observer” and a “notification” in a block of polymer properties, as well as how they differ from “observers” and “listeners”. The online documentation does not seem to mention them.

Can anyone explain this to me.

Answer 1

• notify triggers an event to notify parents of changed properties.
• observer is a function called when a property changes
• listeners - an event handler that is called when a specific event is received.