How to select a node using XPath if sibling node has a specific value?

Question

I have the following document:

  abc
  ccc
  
ffffd


  zz         


        

Answer 1

Q: How to select a node using XPath if sibling node has a specific value?
Because there are only "XPath Axes" for following-siblings and preceding-siblings, you can use one of them if the position is fixed.

But better: Look for cc were the parent has child bb with value 'zz':

//cc[../bb='zz']