How to refer using JS to catalog items in a regular text field in Bitrix24?

Question

JavaScript

The essence of the problem.
There is a product catalog. In the goods we indicate what the person actually buys.
But you also need to create a separate field where we will prescribe what the person originally wanted to buy.
I have the following thought:
Create a field.
Create a JS widget, as the user enters information into this field, pull (hints) from the product catalog.
The bottom line is that it would be convenient to enter.

If you just create a list field and refer to the product catalog, then it will be too cumbersome and there is absolutely no navigation in it.

How else can this problem be solved?
How to access the elements of the directory with input?