nth descendant

[Mouvedia]

We need something like :nth-descendant.

<root>
 <a />
 <b />
 <c>
   <x>
     <d>
        <y />
     </d>
   </x>
 </c>
 <d />
</root>

First proposal

The level filter.

Second proposal

A functional notation for the descendant combinator.

//selects the d elements descendants of root nested 3 levels deep
root ..(3) d { }
//selects the y elements descendants of c nested 3 levels deep
root c ..(3) y { }
//selects the y elements descendants of c nested 3 levels deep or more
root c ..(≥3) y { }

Third proposal

A modifier which repeats the selector.

root container 3[*] element { }
//would be equivalent to
root container * * * element { }

[FSX]

I would go for :lvl(N), because it looks like the element must be at level N. And ..(N) looks like all the elements starting from level N are selected.

[jakepetroules]

:lvl(N)

[Mouvedia]

@FSX very good point: a functional notation on the combinator alter the way the combinator works hence it could be interpreted as from this level or till this level instead.

I updated the example to cover these cases. On @veosotano's feedback, I removed the first proposal on the grounds that a filter needs to be global: this one can't be used with another combinator preceding the element.

I have also added a third proposal which covers the main use case.

[Mouvedia]

superseded by #87