Implementation of a form for selecting goods in an online store, what about indexing yes or no?

Question

Online shopping

I have a question from a colleague.
We are changing the site design for an online store , we also want to make changes in the code. We decided to implement the selection of goods by separate categories on the main page - so far we have been offered this option: selection by color, size, category, price, etc.
The question is the following - is it necessary to close such a form from indexing or not? If so, how is it better to use standard methods or separate scripts, etc. if not why not.
It is also possible to use an Ajax form here, which does not seem to be indexed by search engines if this information is not old of course.
Therefore, if it’s not difficult for you, I ask you to share your opinion and experience regarding the solution of this kind of situation.
It is also interesting to see a different opinion, for example, to place this form on other sections of the site, i.e. not on main page?
Do you have any ideas about this, examples, tips, etc. thanks in advance.

Answer 1

rather no than yes
With a complex shape, no robot will fully understand.
The robot is better as simpler - so it would be better to "close" noindex and place links to "hot" filter options nearby.
for example

<a href="?max_price=10k&category=бла-бла">самый покупаемый бла-бла до 10к</a> 
<a href="?max_price=10k&category=фуу&promo=8_March">фуу на 8 марта до 10к</a>