dom

 

继承在dom中的重要性，以下为a标记继承关系图

 

 

 

从图中可以看到NODE是核心，查阅w3c可以知道 node 的相关

http://www.w3.org/wiki/DOM/domcore/Node#DOM_Core_reference

Node

The Node interface is the primary datatype for the entire DOM. It represents a single node in the document tree. While all objects implementing the Node interface expose methods for dealing with children, not all objects implementing the Node interface may have children. For example, Text nodes may not have children, and adding children to such nodes results in a DOMException being raised.

Attributes

Name Description

nodeType	Returns the type of this node.
nodeName	Returns the name of this node.
baseURI	Returns the absolute base URI of this node or null if the implementation wasn't able to obtain an absolute URI.
ownerDocument	Returns the top level document object for this node.
parentNode	Returns the parent of this node in the DOM tree.
parentElement	Returns the parent element of this node in the DOM tree.
childNodes	Returns the child of this node in the DOM tree.
firstChild	Returns the first child of this node in the DOM tree.
lastChild	Returns the last child of this node in the DOM tree.
previousSibling	Returns the node immediately preceding this node.
nextSibling	Returns the node immediately following this node..
nodeValue	Returns the value of this node.
textContent	Returns this attribute returns the text content of this node and its descendants.

 

 

Methods

Name Description

hasChildNodes()	Returns whether this node has any children.
compareDocumentPosition(other)	...
insertBefore(newChild, refChild)	Inserts the node newChild before the existing child node refChild.
replaceChild(newChild, oldChild)	Replaces the child node oldChild with newChild in the list of children, and returns the oldChild node.
removeChild(oldChild)	Removes the child node indicated by oldChild from the list of children, and returns it.
appendChild(newChild)	Adds the node newChild to the end of the list of children of this node.
cloneNode(deep)	...
isSameNode(node)	Returns whether this node is the same node as the given one.
lookupPrefix(namespace)	Look up the prefix associated to the given namespace URI, starting from this node.
lookupNamespaceURI(prefix)	Look up the namespace URI associated to the given prefix, starting from this node.
isDefaultNamespace(namespace)