public Node lookup (String selector)

Finds this Node, or the first sub-node, based on the given CSS selector. If this node is a Parent, then this function will traverse down into the branch until it finds a match. If more than one sub-node matches the specified selector, this function returns the first of them.

For example, if a Node is given the id of "myId", then the lookup method can be used to find this node as follows: scene.lookup("#myId");.

Parameters:

selector

The css selector of the node to find

Returns:  The first node, starting from this Node, which matches the CSS selector, null if none is found.