XML DOM Get Nodes

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XML DOM Get Nodes

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Get an Element's Value

The getElementsByTagname() method return a nodelist that contains all elements with the specified tag name in the same order as they appear in the source document.

The following code fragment print the values of all "title" elements in "bookdetails.xml":

xmlDoc=loadXMLDoc("booksdetails.xml");
var x=xmlDoc.getElementsByTagName('title');
for (i=0;i<x.length;i++)
{
document.write(x[i].childNodes[0].nodeValue)
document.write("<br />")
}

O/P:

Everyday Italian
Harry Potter
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Get an Attribute's Value

The getAttribute() method can be used to display the value of the specified attribute.

The following code fragment print the values of all "category" attributes in "bookdetails.xml":

xmlDoc=loadXMLDoc("bookdetails.xml");
var x=xmlDoc.getElementsByTagName('book');
for (i=0;i<x.length;i++)
{
document.write(x[i].getAttribute('category'));
document.write("<br />");
}

O/P:

COOKING
CHILDREN
WEB
WEB

Get an Item's Value

The getNamedItem() method can be used to retrieve the specified node.

The following code fragment shows that how to print the value of the "category" attribute in each <book> element":

xmlDoc=loadXMLDoc("bookdetails.xml");
var x=xmlDoc.getElementsByTagName("book");
for(i=0;i<x.length;i++)
{
var attlist=x.item(i).attributes;
var att=attlist.getNamedItem("category");
document.write(att.value + "<br />")
}

O/P:

COOKING
CHILDREN
WEB
WEB

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Keywords: xml document, xml file, xml parser, xmldom microsoft.xmldom, text node, xml dom attribute, document object model

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