*The question: "How would you have multiple text input forms (on
shopping cart page) with different inputted data (product quantities)
submitted for querying the database (for changing the quantity of
multiple products in the shopping cart at the same time)?**"*

*Here is an ideal example to clarify the matter:*
When a customer wants to change quantities of multiple products all at
once in the shopping cart, all the quantities has to be changed at the
same time just by clicking a button called (e.g. Update Quantity).

*Issue*: Currently I have update quantity buttons for each product,
which isn't convenient.

I would appreciate any tips, techniques, comments, or reference to any
website regarding this issue at your repository, thanks!