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XML DOM 中的 DOM 节点树


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All the nodes in a node tree have relationships to each other.
节点树中的所有节点都彼此关联。


What is a Node Tree?
什么是节点树?

A node tree shows an XML document as a set of nodes and the connections between them.
节点树以一组节点的形式展示了整个XML文档,并指明了它们之间的连接关系。

  • In a node tree, the top node is called the root
    在一个节点数中,顶部节点又称为根节点
  • Every node, except the root, has exactly one parent node
    除了根节点之外,每个节点都至少包含一个父类节点
  • A node can have any number of children
    一个节点可以包含任意数量的子类节点
  • A leaf is a node with no children
    不包含子类节点的节点称为leaf
  • Siblings are nodes with the same parent
    同属节点拥有相同的父类节点

Look at the following XML file: books.xml.
请看看下面这份XML文件:books.xml

The following image illustrates a part of the node tree and the relationship between the nodes in the XML file above:
下面这张图指明了节点树的一部分,并勾画了上述xml文件内节点之间的关系:

Node tree

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