Publishing with XML - Herong's Tutorial Examples - v4.02, by Dr. Herong Yang
What Is XSL (eXtensible Style Language)?
This section provides some basics about Extensible Stylesheet Language (XSL).
What is XSL?
XSL (eXtensible Style Language): A language that defines style instructions to transform the information contained in XML files into new formats.
Main features of XSL:
'Hello world!' Example of XSLT
Here is the XSL file, hello.xsl, that defines how information in my hello.xml should be transformed:
<?xml version="1.0"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:template match="p">Hello world! - From hello.xsl.</xsl:template> </xsl:stylesheet>
In order to link hello.xsl to hello.xml, I have to modify it as hello_xsl.xml:
<?xml version="1.0"?> <?xml-stylesheet type="text/xsl" href="hello.xsl"?> <p>Hello world!</p>
Note that a new processing instruction "xml-stylesheet" is added to the XML file to tell the processing applications to look for style instructions in "hello.xsl".
The next question is then: "Do we have an application that can process this XML file based on the style instructions specified in the XSL file?"
The answer is yes. Microsoft Internet Explorer (IE) 6.0 is an excellent XML XSL processor. So if you run IE 6.0 and open hello_xsl.xml, you will see the following text in the IE window:
Hello world! - From hello.xsl.
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