| number() Function | |
| Converts its argument to a number. | |
| Inputs | |
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An object. The object is converted to a number as described in the following subsection. |
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| Output | |
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A number. The object is converted to a number as follows:
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| Defined in | |
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XPath section 4.4, Number Functions. |
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| Example | |
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Here is the XML document we'll use to test the number() function:
<?xml version="1.0"?>
<report>
<title>Miles Flown in 2001</title>
<month sequence="01">
<miles-flown>12379</miles-flown>
<miles-earned>35215</miles-earned>
</month>
<month sequence="02">
<miles-flown>32857</miles-flown>
<miles-earned>92731</miles-earned>
</month>
<month sequence="03">
<miles-flown>19920</miles-flown>
<miles-earned>76725</miles-earned>
</month>
<month sequence="04">
<miles-flown>18903</miles-flown>
<miles-earned>31781</miles-earned>
</month>
</report>
We'll test the number() function with a variety of arguments:
<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text"/>
<xsl:variable name="newline">
<xsl:text>
</xsl:text>
</xsl:variable>
<xsl:template match="/">
<xsl:value-of select="$newline"/>
<xsl:text>Tests of the number() function:</xsl:text>
<xsl:value-of select="$newline"/>
<xsl:value-of select="$newline"/>
<xsl:text> number(true())=</xsl:text>
<xsl:value-of select="number(true())"/>
<xsl:value-of select="$newline"/>
<xsl:text> number(false())=</xsl:text>
<xsl:value-of select="number(false())"/>
<xsl:value-of select="$newline"/>
<xsl:text> number(/report/month[2]/miles-flown)=</xsl:text>
<xsl:value-of select="number(/report/month[2]/miles-flown)"/>
<xsl:value-of select="$newline"/>
<xsl:text> number(//miles-flown)=</xsl:text>
<xsl:value-of select="number(//miles-flown)"/>
<xsl:value-of select="$newline"/>
<xsl:text> number(/report/title)=</xsl:text>
<xsl:value-of select="number(/report/title)"/>
</xsl:template>
</xsl:stylesheet>
The output of our stylesheet looks like this: Tests of the number() function: number(true())=1 number(false())=0 number(/report/month[2]/miles-flown)=32857 number(//miles-flown)=12379 number(/report/title)=NaN |
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