{{description}}

The startup number of nodeinstances is 4. You can add new nodes to the container, which will automaticly have a reference inside Y.Node._instances, (because they are created by Y.Node.create). You see the number of nodeinstances increasing.

When clicking on the Whipe nodes-button, the container-node is emptied by container.set('text', '');, this will empty the container, but will not destroy all inner-node instances from Y.Node._instances --> you won't see the number of nodeinstances decreasing at this point.

However, the GC-module is working behind the scenes. Just wait and see how the number of nodeinstances will be reduced to 4.