The HTML DOM views a HTML document as a node-tree.
All the nodes in the tree have relationships to each other.
The HTML DOM views a HTML document as a tree-structure. The tree structure is called a node-tree.
All nodes can be accessed through the tree. Their contents can be modified or deleted, and new
elements can be created.
The node tree below shows the set of nodes, and the connections between them. The tree starts at
the root node and branches out to the text nodes at the lowest level of the tree:
The nodes in the node tree have a hierarchical relationship to each other.
The terms parent, child, and sibling are used to describe the relationships. Parent nodes have
children. Children on the same level are called siblings (brothers or sisters).
The Below image illustrates a part of the node tree and the relationship between the nodes:
Look at the following HTML fragment:
From the HTML above:
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