Is it possible to select only even elements of the sample by xpath?

Question

htaccess

Hello everyone!
Interests, it is possible to allocate only even elements from selection by xpath expression.
For example, I have this markup

<a class="index"></a>
<a class="index"></a>
<a class="index"></a>
<a class="index"></a>

Is it possible, how do you select all links through one, that is, 2nd, 4th, etc.?

Answer 1

with localhost, I think you have a problem because of https, do you have https on your localhost?
As for the url, the base works on
RewriteCond %{REQUEST_URI}.

Answer 2

//a[position() mod 2 = 0]