Dom Note (ii): node interface

all nodes are represented using the node interface, and there are many ways to get nodes, such as document.getElementsByTagName (), Document.getelementsbyname () Returns a NodeList object, and then gets the nodes within it.

The properties and amplification of the nodes are defined on the node interface:

1. List of attributes common to node interface

Property name	Data type	Description
NodeName	Domstring	Return to Node name
NodeValue	Domstring	Return node value
NodeType	Int	Return node type (see later)
ParentNode	Node	Returns the parent node of the current node
ChildNodes	NodeList	Returns all child nodes of the current node
FirstChild	Node	Returns the first child node of the current node
LastChild	Node	Returns the last child node of the current node
PreviousSibling	Node	Returns the immediate previous sibling node of the current node
NextSibling	Node	Returns the next sibling node immediately adjacent to the current node
Attributes	NamedNodeMap	Returns all properties of the current node
Ownerdocument	Document	Returns the Document object corresponding to the current node
NamespaceURI	Domstring	Returns the URI of the namespace to which the current node belongs
Prefix	Domstring	Returns the prefix of the namespace to which the current node belongs
LocalName	Domstring	Returns the local part of the current node's qualified name

2. List of common methods for node interface

Method name	Data type	Description
AppendChild	Node	Add a child node at the end
CloneNode	Node	Cloning a child node
HasAttributes	Boolean	Determine if the node has attributes
HasChildNodes	Boolean	Determine if the node has child nodes
InsertBefore	Node	Inserts a node at the specified node
IsSupported	Boolean	Determine whether node-specific is supported
Normalize	Void	Normalize nodes
RemoveChild	Node	Delete a child node
ReplaceChild	Node	Replace a child node

3. Node Type

In a DOM document, each node belongs to a type, and you can use the Node.nodetype property to get the type of the node. The DOM specification specifies 12 types of nodes that can be represented by constants defined by the node interface, or by numbers.

Node Type constants	Numeric representation	Description
Element_node	1	ELEMENT node
Attribute_node	2	Attribute node
Text_node	3	Text node
Cdata_section_node	4	CDATA Node
Entity_reference_node	5	Entity reference node
Entity_node	6	Entity node
Processing_instruction_node	7	Processing instruction Nodes
Comment_node	8	Comment Node
Document_node	9	Document node
Document_type_node	10	Document Type Node
Document_fragment_node	11	Document fragment Node
Notation_node	12	Symbol node

Ps:ie does not support constant representation, preferably in numerical notation. Six most common types of node: 1,2,3,8,9,11

Original starting:http://www.ido321.com/1318.html

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Dom Note (ii): node interface