Inside XSLT

Matching Attributes

As Chapter 3, “Creating and Using Templates,” showed, you can match attributes if you preface their names with an @. You’ve already worked with the UNITS attribute that most of the children of <PLANET> elements support:

<PLANET> 
        <NAME>Earth</NAME> 
        <MASS UNITS="(Earth = 1)">1</MASS> 
        <DAY UNITS="days">1</DAY> 
        <RADIUS UNITS="miles">2107</RADIUS> 
        <DENSITY UNITS="(Earth = 1)">1</DENSITY> 
        <DISTANCE UNITS="million miles">128.4</DISTANCE><!--At perihelion--> 
</PLANET> 

To recover the units and display them as well as the values for the mass and so on, you can match the UNITS attribute with @UNITS, as follows:

Listing 4.1. Matching Attributes

<?xml version="1.0"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> ...