Class Anchor

Construct a new tree anchor object. The tree anchor is a pure data object used to point to a position in the tree. The object has the following properties:

base

The base node of the anchor. If the anchor points at the root node, base is undefined.

target

The target node this anchor points at. This node is a child node of base. This property may be undefined if the anchor points before or after the children list.

index

The index into the children list of the base node. This property is undefined when the anchor points at the root of the tree.

Constructor

class Anchor(root[, base][, index])

Arguments:

• root (tree.Node) – The root node of the tree.
• base (tree.Node) – The base node for this anchor. If index is left out, this parameter specifies the target node. Otherwise it specifies the parent node of the target pointed at by index.
• index (Number) – The child index of the target node.