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函数 number 将参数转化为数字。 XSLT stylesheet 1 展示了字符串的转换, XSLT stylesheet 2 转换布尔类型的值: true 和 false。

XSLT stylesheet 1

XML源码
<source>

<text>124</text>
<text>1 2 4</text>
<text>-16</text>
<text>- 16</text>
<text>125.258</text>
<text>125.</text>
<text>ASDF</text>
<text>A123</text>
<text>true</text>
<text>false()</text>

</source>

输出
<TABLE border="1">
<TR>
<TH>text</TH>
<TH>number</TH>
</TR>
<TR>
<TD>124</TD>
<TD>124</TD>
</TR>
<TR>
<TD>1 2 4</TD>
<TD>NaN</TD>
</TR>
<TR>
<TD>-16</TD>
<TD>-16</TD>
</TR>
<TR>
<TD>- 16</TD>
<TD>NaN</TD>
</TR>
<TR>
<TD>125.258</TD>
<TD>125.258</TD>
</TR>
<TR>
<TD>125.</TD>
<TD>125</TD>
</TR>
<TR>
<TD>ASDF</TD>
<TD>NaN</TD>
</TR>
<TR>
<TD>A123</TD>
<TD>NaN</TD>
</TR>
<TR>
<TD>true</TD>
<TD>NaN</TD>
</TR>
<TR>
<TD>false()</TD>
<TD>NaN</TD>
</TR>
</TABLE>

用HTML察看
text number
124 124
1 2 4 NaN
-16 -16
- 16 NaN
125.258 125.258
125. 125
ASDF NaN
A123 NaN
true NaN
false() NaN
XSLT stylesheet
<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>

<xsl:template match="/">
<TABLE border="1">
<TR>
<TH>text</TH>
<TH>number</TH>
</TR>
<xsl:for-each select="//text">
<TR>
<TD>
<xsl:value-of select="."/>
</TD>
<TD>
<xsl:value-of select="number()"/>
</TD>
</TR>
</xsl:for-each>
</TABLE>
</xsl:template>


</xsl:stylesheet>



XSLT stylesheet 2

XML源码
<source>

<text>124</text>
<text>1 2 4</text>
<text>-16</text>
<text>- 16</text>
<text>125.258</text>
<text>125.</text>
<text>ASDF</text>
<text>A123</text>
<text>true</text>
<text>false()</text>

</source>

输出
<TABLE border="1">
<TR>
<TH>text</TH>
<TH>number</TH>
</TR>
<TR>
<TD>true</TD>
<TD>NaN</TD>
</TR>
<TR>
<TD>false()</TD>
<TD>NaN</TD>
</TR>
</TABLE>
<P>but:</P>
<TABLE border="1">
<TR>
<TH>function</TH>
<TH>number</TH>
</TR>
<TR>
<TD>true()</TD>
<TD>1</TD>
</TR>
<TR>
<TD>false()</TD>
<TD>0</TD>
</TR>
<TR>
<TD>5&gt;7</TD>
<TD>0</TD>
</TR>
<TR>
<TD>5&lt;7</TD>
<TD>1</TD>
</TR>
</TABLE>

用HTML察看
text number
true NaN
false() NaN

but:

function number
true() 1
false() 0
5>7 0
5<7 1
XSLT stylesheet
<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>

<xsl:template match="/">
<TABLE border="1">
<TR>
<TH>text</TH>
<TH>number</TH>
</TR>
<xsl:for-each select="//text[text() = 'true' or text() = 'false()']">
<TR>
<TD>
<xsl:value-of select="."/>
</TD>
<TD>
<xsl:value-of select="number()"/>
</TD>
</TR>
</xsl:for-each>
</TABLE>
<P>
<xsl:text>but:</xsl:text>
</P>
<TABLE border="1">
<TR>
<TH>function</TH>
<TH>number</TH>
</TR>
<TR>
<TD>true()</TD>
<TD>
<xsl:value-of select="number(true())"/>
</TD>
</TR>
<TR>
<TD>false()</TD>
<TD>
<xsl:value-of select="number(false())"/>
</TD>
</TR>
<TR>
<TD>5>7</TD>
<TD>
<xsl:value-of select="number(5 > 7)"/>
</TD>
</TR>
<TR>
<TD>5<7</TD>
<TD>
<xsl:value-of select="number(5<7)"/>
</TD>
</TR>
</TABLE>
</xsl:template>


</xsl:stylesheet>

4-19-2013

4-19-2013

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