如何使用 XPath 查找一组元素中选择组的属性的 minimum/maximum 值？

Question

<foo>
  <bar id="1" score="100" group="beginner" />
  <bar id="2" score="200" group="beginner" />
  <bar id="3" score="300" group="expert" />
  ...
</foo>

我试过这样使用，但有些问题 (xpath 1.0)

foo/bar[@group='beginner' and not(@score<= preceding-sibling::bar/@score) and not(@score<=following-sibling::bar/@score)]

Answer 1

使用 xpath 1.0

/foo/bar[@group='beginner'][(not(preceding-sibling::bar[@group='beginner']/@score >= @score) and not(following-sibling::bar[@group='beginner']/@score > @score))      or (not(preceding-sibling::bar[@group='beginner']/@score <= @score) and not(following-sibling::bar[@group='beginner']/@score < @score))]/@score

如何使用 XPath 查找一组元素中选择组的属性的 minimum/maximum 值？

How can I use XPath to find the minimum/maximum value of an attribute for chooses group in a set of elements?

xpath

xpath-1.0