Polymer. Way to dynamically add or remove observer

Question

Is there a way to add or remove observer not in the moment of element initing? I can define observer this way:

observers: ['dataChanged(data.*)']

Can i remove this observer later or can I set this observer different way than that?

Answer 1

You can easily add an observer dynamically, either by:

this._addObserverEffect("property", observerFunction);

or

this._addComplexObserverEffect("dataChanged(data.*)");

Removing is harder and Polymer does not provide a function to do this. Although you could search for it in the _propertyEffects array, I wouldn't recommend it. Maybe just check in your observer function whether it should still be active, and return if not.