XML Demystified

CHAPTER 10 MSXML
So far in this chapter, you’ve learned how to insert one XML document into another.
In addition to this, you’ll need to select, extract, delete, and validate information
contained in an XML document.
We’ll explore how to perform these common tasks in this section. First we’ll
show you how to create an HTML page that enables you to execute each of these
tasks. In a real-world application, of course, these tasks would be built into your
application.
Here’s the HTML page we’ll use for these examples:
Select Artist:
Display Titles
Delete Nodes w/UPC:
Validate Document
The SelectArtist() Function—
Filtering an XML Document
The SelectArtist() function is used to display information about an artist’s CDs by
entering the name of the artist and then having the SelectArtist() search and display
related information about the artist’s CDs. Here’s the SelectArtist() function:
function SelectArtist(artist)
{
var objNodes = objXML.selectNodes(
"/catalog/cd[artist='" + artist + "']")
if(objNodes.length == 0)
{
alert("Could not find artist with name " + artist);
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Select, Extract, Delete, and Validate