Here are the different parts of my code
part1
<ul class="tabs">
<li><a class="tab1" href=""></a></li>
<li><a class="tab2" href=""></a></li>
<li><a class="tab3" href=""></a></li>
...
</ul>
and part2
<div class="field-items">
<div class="field-item">tab1</div>
<div class="field-item">tab3</div>
...
</div>
How to make a condition so that if in Part 2 it has the values "tab1" and "tab3", then Part 1 is modified to contain these classes:
<li class="hiden"><a class="tab1" href=""></a></li>
...
<li class="hiden"><a class="tab3" href=""></a></li>
...