replace
Replaces the given child oldNode of the current node with the given newNode. The new node can be an existing node in the document, or you can create and insert a new node. If the newNode is existing node, it will be moved to a new location in the document.
Return
true if the given oldNode was successfully replaced
Parameters
new
the new node to replace the oldNode
old
the existing node to be replaced
Throws
when this node is closed