mutation-observer-behavior
Helper Polymer behavior exposing a private API for observing mutations in the element's light DOM.
If you only want to detect addition/removal of children, use Polymer's DOM API's observeNodes
method to track when children are added and removed from your element.
Use it in your project :
Element dependencies are managed via Bower. To install this Polymer behavior, use this command
bower install --save mutation-observer-behavior
Documentation and demo
Please refer to the component page for more informations.
Example of elements using this behavior: