XML DOM accessing attributes

This example shows the use of a NamedNodeList collection for accessing the attributes of an element mode. Using the XML sample from the first example it makes up a NodeList collection of the various books and then picks out those that have a category of 'classics' printing the isbn reference for each.

A NodeList is generated for all the <book> nodes. Each node has an Attribute property which is a NamedNodeList of attribute nodes. This is checked using the getNamedItem() method to select those that have the right value for the cat attribute and if it matches the value of the isbn attribute is printed.

Note that the attribute collection was referenced by OBJECT a first rather than used in two inline expressions which would have involved evaluating the expression twice.

OBJECT x = CREATE "dynamic", "dyndom"
OBJECT p = x.CreateParser()
p.parse("books.xml")
FOR OBJECT i IN p.Document.getElementsByTagName("book")
	OBJECT a = i.Attributes
	IF (a.getNamedItem("cat").NodeValue$ == "classics")
		PRINT a.getNamedItem("isbn").NodeValue$
	END IF
NEXT OBJECT i
OBJECT a = NULL
OBJECT p = NULL
OBJECT x = NULL

For other XML DOM examples click here.