Microsoft Word Applied xml a toolkit for Programmers Wiley doc

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Ceponkus, Hoodbhoy - Applied XML - Toolkit for Programmers

Figure 5.4: DOMifier output of nodeValue XML example. nodeType
Table 5.3: nodeType Definition Node Type NodeType

element contents

For the above example, the first alert produces hello

as the result, and the second alert
produces element contents. Figure 5.4 shows Named- NodeMap attributes collection and
the NodeList childNodes collection. Notice that the attribute someAttribute and the Text
node containing element contents are both the first child of their collections. It should also
be noted here that to access the contents of an element, you need to drill down to the
Text node and check the Text node’s nodeValue property. For attributes, the nodeValue
property on the Attribute node can give the contents of the attribute. Of course, you could
also drill down to the Attribute’s Text node and get the nodeValue off that node for the
same result. In other words, the following two lines produce the same result.
xml.documentElement.attributes.item(0).nodeValue
xml.documentElement.attributes.item(0).childNodes.item(0).nodeValue
Figure 5.4:
DOMifier output of nodeValue XML example.
nodeType
Type
: Unsigned short integer
Description
: This property is an integer value that represents the type of the node. Table
5.3 shows the correlation between nodeType and the different nodes.
Table 5.3: nodeType Definition

Node Type
NodeType

- 120 -
Element
1
Attribute
2
Text
3
CDATASection
4
EntityReference
5
Entity
6
ProcessingInstruction
7
Comment
8
Document
9
DocumentType
10
DocumentFragment
11
Notation
12

The following six properties—parentNode, childNodes, firstChild, lastChild,
previousSibling, nextSibling—refer to other nodes in the same tree. Figure 5.5 shows
their relationship to a node picked out at random called CURRENT NODE. Also, nodes
that have their description in parentheses are not directly accessible from CURRENT
NODE, but are still accessible indirectly through another node.

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