CODEWITHSUNDEEP
xpath
Duffydake
Duffydake

Reputation: 917

Xpath sibling condition (or)

I'm trying to find the first preceding-sibling of a node with OR condition.
For example , i have a node A and i try to get the first preceding-sibling B but if there is no B then get first preceding-siblingSPAN.

I don't know how to do the OR condition:
This is what i tried : 

A//preceding-sibling::B|SPAN[1]
A//preceding-sibling::B[1]|SPAN[1]
A//preceding-sibling::B[1]|preceding-sibling::SPAN[1]
A//(preceding-sibling::B[1]|preceding-sibling::SPAN[1]) // Xpath invalid
A//preceding-sibling::(B|SPAN)[1] // Xpath invalid
.... and many more

In short I'm looking for : Node -> preceding-sibling::NodeType1[1] OR preceding-sibling::NodeType2[1]

Is there a way to achieve this with Xpath or i must try one and if there is no result try the other ?

EDIT:

The good answer to this question is I think StuartLC answer (I didn't try it).
If you are looking for the first node between B and SPAN then used har07 answer.

Upvotes: 2

Views: 425

Answers (2)

StuartLC
StuartLC

Reputation: 107237

As per Michael's comment, note that *[name()='B' or name()='SPAN'] will return the first preceding-sibling which is either B or SPAN.

If I understand your question correctly, you want to 'fallback' to SPAN only IFF there are no B preceding-siblings of A at all. AFAIK you will need to repeat the query with a union:

(A/preceding-sibling::B[1] | A/preceding-sibling::SPAN[1])[1]

Upvotes: 2

har07
har07

Reputation: 89285

You can try this way instead :

A//preceding-sibling::*[name()='B' or name()='SPAN'][1]

Upvotes: 1

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