Hey bros, another issue on etherjs, I read the docs and still can't figure out what I should write down here... what does resulting a promise mean exactly in terms of code please?

Mar 11, 2022, 10:58 AM

It'll return the transaction hash if it resolves correctly

Mar 11, 2022, 11:31 AM

That's true, but what should I write to get the hash? Is : await provider.sendTransaction(rawTx) accurate here?
The etherjs docs are not very explicit

Mar 11, 2022, 11:35 AM

const txhash = await provider.sendTransaction(rawTx);
Should work

Mar 11, 2022, 11:38 AM

Mar 11, 2022, 11:42 AM

Hmm try console logging it

Yeah which ide is this anyway

Mar 11, 2022, 11:44 AM

An online course : chainshot.com

Like cryptozombies for solidity but for etherjs ;)

Mar 11, 2022, 11:45 AM

on txhash

you have to get the hash only

not the whole result

Mar 11, 2022, 11:47 AM

Mar 11, 2022, 11:50 AM

where you used hash?

try to append
.hash to txHash

and please learn how to take screenshots

Mar 11, 2022, 11:51 AM

now I get the hash, thanks, and it tells me I have to resolve the promise

Mar 11, 2022, 11:55 AM

I think it is just expecting you to return the value, instead of console logging it

Is the cannot read property error , old one or after you changed ?

Mar 11, 2022, 12:02 PM

I tried to add this line

The final step that is missing is that I return the promise

Mar 11, 2022, 12:04 PM

return txhash

Try this, after your console log

Mar 11, 2022, 12:05 PM

OMG it worked!!!!!

Thanks bro!!!!!
I don't understand, they asked a promise of the function call, and in the etherjs docs it supposes a function : provider.waitForTransaction

Mar 11, 2022, 12:07 PM

txhash variable is the promise

You just need to return the promise object

The trxhash variable is a transaction promise object, with a "hash" property

Mar 11, 2022, 12:09 PM

So txHash here is not just the hash, despite the name, it is a list of elements, if I got it right

Mar 11, 2022, 12:09 PM

Correct

It is a promise object, which might have many properties, one of which is 'hash'

Mar 11, 2022, 12:09 PM

I got it, you are amazing bro, thanks a lot
I'm new to etherjs, I followed hours and hours of solidity but I look forward to master hardhat and etherjs very soon

Mar 11, 2022, 12:11 PM

👍

Mar 11, 2022, 12:11 PM

Keep working hard !

Mar 11, 2022, 12:11 PM

I can give you one tip,
Master your javascript, all the concepts , especially ES6 ,

After that you wouldn't need to do a course on ether.js

I did not do any course on ethers.js,

Whenever i want to do anything, i just refer to their doc,
But i am able to do this, only because my JS concepts are pretty strong

Mar 11, 2022, 12:12 PM

https://forum.polygon.technology/t/alert-upcoming-downtime-due-to-issue-with-pos-chain/2324

downtime on a blockchain wtf

Mar 11, 2022, 12:28 PM

Thanks for the advice ! Which concepts are these in your opinion, do you recommand a JS course?

What is the difference between hardhat and etherjs please?

Mar 11, 2022, 12:51 PM

Etherjs tool that helps you on the frontend to connect your contracts. Hardhat tool used to create smart contracts, deploy and different architecture related things

Mar 11, 2022, 1:01 PM

Thanks, as a smart contract engineer on the backend will I need etherjs? I had in mind I would only need hardhat to test my contract

Mar 11, 2022, 1:05 PM

https://ethereum.stackexchange.com/a/46377

Don't limit yourself, learn everything you can learn. That's how you can go one step ahead in job applications, interviews.

Mar 11, 2022, 1:09 PM

Mmm i don’t think so, is very ease to learn tho.

Mar 11, 2022, 1:11 PM

That's true bro, I just want to proceed step by step

Mar 11, 2022, 1:26 PM

All promises, async, etc basically ES6.

Tyler McGinnis from ui.dev i have heard is good.
Or get any top rated ones from udemy

Mar 11, 2022, 1:40 PM

multisig?

Mar 11, 2022, 2:11 PM