Hi, help me please
Is this the json abi of the part of the smart contract under which the transaction takes place?

How to convert json abi to hex (is it hex?)?

That’s typically done for you by the library you’re using

Should I write in data the abi of the smart contract that is used to call the function?

What you typically do is you create an contravt object using the Abi - you then call functions on this object like in a normal programming language and pass them arguments and then the library will translate them into that hex string you pasted

You never really see the hex string or need to worry about it unless you are doing more complicated things

Yes, I did this using web3.js, now I'm learning window.ethereum

How I can create a contract object using window.ethereum?

I’ve never heard of window.Ethereum, will need to take a look

Oooh it’s just the provider

its what you use to detect metamask web3

Yea it’s just injected

Haven’t done that in a few years so don’t know, I’m guessing you so what you need to do via web3.js as normal and then get the provider from window.Ethereum to send transactions

web3.js is no longer supported by metamask, this is my problem, I have all the code submitted to web3.js

Okay, I'll try to combine them somehow

But if someone knows how to do it, I would be gratefull

Or maybe someone can send a small code as an example of how to work through window.ethereum when interacting with a smart contract? For example just how approve can be done?

Still working on this decimal. Don't know how to do price. from uint