javascript DOMNodeInsertedIntoDocument Description

Fires on a node when that node is inserted into an existing node container, but the origin of the node is from another document. If you assign an event listener for this event and the DOMNodeInserted event, the DOMNodeInsertedIntoDocument event fires first. Note that if the incoming node comes from another location in another document, the removal of the node from its original document fires the DOMNodeRemovedFromDocument and DOMNodeRemoved events on the removed node before it leaves its original container (so that the event can bubble up to its original container).