XSL Output Element

An "xsl:output" element allows the stylesheet authors to specify how do they wish a result tree to be output. If the XSL processor outputs a result tree, it must do so as specified by a xsl:output element; however, it is required not to do so. An xsl:output element is allowed only as the top-level element. outputs as html

XML Source

<source>
<hr/>
<hr/>
<hr/>
</source>

Output

<source>
<hr>
<hr>
<hr>
</source>

XSL stylesheet

<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:output method="html"/>
<xsl:template match="/">
<xsl:copy-of select="/source"/>
</xsl:template>
</xsl:stylesheet>

HTML Method

When xml:output element is not present the default output method is "xml" (see to XSL stylesheet 1 ), And if the document element of output has a value "html" which is case insensitive and it does not have the 'xmlns' attribute, then the html method is made used

XML Source

<source>
<h1> XML output </h1>
<hr/>
</source>

Output

<h1> XML output </h1>
<hr/>

XSL stylesheet

<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:template match="/">
<xsl:copy-of select="/source/*"/>
</xsl:template>
</xsl:stylesheet>

HTML Output Method

An html output method must not output the end-tag for an empty elements specified in the HTML specification. An html output method must not perform the escaping for a content of the script and also the style elements.

XML Source

<source>
<h1> HTML output </h1>
<AAA/>
<HR/>
<script>if (a < b) foo(); if (cc < dd) foo() </script>
<hr/>
<hr/>
<Hr/>
<hR/>
</source>

Output

<h1> HTML output </h1>
<AAA></AAA>
<HR><script>if (a < b) foo();
if (cc < dd) foo()
</script><hr>
<hr>
<Hr>
<hR>

Encoding Attribute

Encoding attribute do specify the preferred encoding to be made used. An html output method must add the META element immediately after start-tag of HEAD element specifying a character encoding actually been used. XSL stylesheet 1 outputs in the UTF-8, An xml source do contains the characters which are not present in the specified character set and they are therefore been escaped.

XML Source

<source>
<html>
<head>
<title>HTML</title>
</head>
<body>
<h1> HTML output </h1> ?�?ala ?nek ko?ka pa?ez be?ka me?ec vyr
</body>
</html>
</source>

Output

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>HTML</title>
</head>
<body>
<h1> HTML output </h1>
?í?ala ?nek
ko?ka pa?ez
be?ka mě?ec vyr
</body>
</html>

XSL stylesheet

<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:output method="html" encoding="UTF-8"/>
<xsl:template match="/">
<xsl:copy-of select="/source/*"/>
</xsl:template>
</xsl:stylesheet>

Text Output Method

A text output method outputs result tree by outputting a string-value of every text node in a result tree in the document order without doing any escaping.

XML Source

<source>
<AAA id="12"/>
</source>

Output

<!ELEMENT AAA ANY><!ATTLIST AAAid ID #REQUIRED>Look at my source in your browser

XSL stylesheet

<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:output method="text"/>
<xsl:template match="AAA">
<xsl:text><!ELEMENT </xsl:text>
<xsl:value-of select="name()"/>
<xsl:text> ANY></xsl:text>
<xsl:text><!ATTLIST </xsl:text>
<xsl:value-of select="name()"/>
<xsl:text/>
<xsl:value-of select="name(@*)"/>
<xsl:text> ID #REQUIRED></xsl:text>
<xsl:text>Look at my source in your browser</xsl:text>
</xsl:template>
</xsl:stylesheet>

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