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DOM Hierarchy (Document Object Model) consists of objects that represent the structure of an HTML or XML document in the form of a tree. The concept of DOM is described in more detail here. Now let's look at the main levels of the DOM hierarchy:
Document
The root object that represents the document itself. It contains all other DOM objects and is the entry point for accessing other elements.
Element
Nodes that represent HTML tags (for example, <div>, <p>, <a>). Elements can have attributes, text content, and nested elements.
Attribute
Attributes that store additional information about elements. For example, class, id, href attributes, etc.
Text
Nodes that represent the text content of an element. They are children of elements but cannot have their own child elements.
Comment
Nodes that represent comments in an HTML or XML document.
DocumentFragment
Used to create and manipulate a group of nodes without affecting the actual document until these nodes are added to the document.
Node
A general class for all nodes in the DOM. Other nodes, such as Element, Text, and Comment, are subtypes of Node.
The DOM hierarchy works like a tree, where each element is a node, and each node can have child nodes, forming a structure similar to a tree with the root at Document and leaves at the level of text nodes or comments.
