Can anyone direct me to a tutorial as to how javascript JSON is transfered to Rust and vice versa?

[LeafWarrior]

Hi guys. Specifically, I've been looking for a way to transfer data from from frontend to backend and vice versa with my tauri desktop application.
Example:
Taking a bunch of many user inputs from front end through an HTML form and saving them in my SQLITE database and another functionality to retrieve data from the database and displaying it to frontend.
The data could range from 1 to 1,000 depending on the number of records so specifying each one as a single parameters is unrealistic. I have to pass an object with unknown number of data.
Someone told me to use JSON but I've been looking for tutorial on how Javascript and backend communicates with JSON to no avail FOR 4 DAYS!!!!! Syntaxes and examples would be nice. Maybe how it works too if the information is available.

Can someone direct me to a tutorial online or at least give me syntaxes pretty please?

[FabianLars]

did you see https://v2.tauri.app/develop/calling-rust/ ?

[LeafWarrior]

I've traversed these pages multiple already. I can't find one that simply passes javascript json functions to rust as parameters (I think displaying database results to frontend will be even more of a headache when I get there) or at least explains it in simple terms.