Where a node came from, so it can be put back exactly there.
The mobile toolbar moves existing panels into its sheets rather than cloning them —
one DOM node, one set of listeners. nextSibling is what makes the restore faithful:
re-appending to parent alone would silently reorder the panel among its siblings.
Where a node came from, so it can be put back exactly there.
The mobile toolbar moves existing panels into its sheets rather than cloning them — one DOM node, one set of listeners.
nextSiblingis what makes the restore faithful: re-appending toparentalone would silently reorder the panel among its siblings.