xml 如何使用 count() 函数是 XSL - 尝试计算报告中“A”的数量
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How to use the count() function is XSL - trying to count the amount of "A"s there are in a report
提问by Jason
I'm trying to count the amount of A's there are in a school report.
我正在尝试计算A学校报告中's的数量。
Here is the report:
这是报告：
<class>
<student>
<first-name>Jane</first-name>
<last-name>Doe</last-name>
<grade>A</grade>
</student>
<student>
<first-name>John</first-name>
<last-name>Smith</last-name>
<grade>B</grade>
</student>
<student>
<first-name>Harry</first-name>
<last-name>Grandson</last-name>
<grade>A</grade>
</student>
<student>
<first-name>Lacy</first-name>
<last-name>Jones</last-name>
<grade>C</grade>
</student>
</class>
How do I get the number of A's in the report?
我如何获得报告中的数量A？
I came up with:
我想出了：
<xsl:value-of select="count(/class/student/grade)"/>
But that counts everything - So I tried to get only the A's with this:
但这很重要 - 所以我试图只得到A's ：
<xsl:value-of select="count(/class/student/grade/A)"/>
But this doesn't work either.
但这也行不通。
I also tried this:
我也试过这个：
<xsl:value-of select="count(/class/student[grade=A])"/>
But that doesn't work either - what do you guys think?
但这也行不通——你们怎么看？
回答by jelovirt
<xsl:value-of select="count(/class/student[grade='A'])"/>
回答by Codename UKS
You can also use:
您还可以使用：
count(/class/student/grade[text()="A"])
