如何通過id查看xml節點？

Question

我有這個XML文件：

<?xml version="1.0" encoding="UTF-8"?> 
<product name="civil"> 
<day>Moonday</day> 
    <dataseries> 
    <data timepoint="3h"> 03:00 </data> 
    <data timepoint="6h"> 06:00 </data> 
    <data timepoint="9h"> 09:00 </data> 
    <data timepoint="12h"> 12:00 </data> 
    <data timepoint="15h"> 15:00 </data> 
    <data timepoint="18h"> 18:00 </data> 
    <data timepoint="21h"> 21:00 </data> 
    <data timepoint="24h"> 00:00 </data> 
    </dataseries> 

如何顯示交替的節點？通過這種方式：3h，9h，15h ...類似於：

<xsl:for-each select="product/dataseries/data" timepoint="@6h"> 

但這段代碼是錯誤的。

Answer 1

嘗試以下

<xsl:for-each select="product/dataseries/data[@timepoint='6h']> 

在方括號可能有也更復雜的條件（例如用或運營商，一些aritmetics等），選擇您需要的節點。