Thank you Artur for contributing to my education. A transaction is not being mined. It is the nonce that is being mined. Transactions are paided for and given to the miners on the network into the transaction mempool list. The miner who finds the nonce that produces the special 256 bit hash gets to add a list of transactions to the new block based on highest gas price first in descending order which is all programmed for the miner. They do this because the miner wants to get paid more.
Thank you for sharing your knowledge ... despite the difficulty with the language (my English is very bad) I understood everything ... you explain very well ... You already have a Spanish-speaking subscriber, Jose Grillo greets you from Venezuela ESPAÑOL Gracias por compartir tus conocimiento ... a pesar de la dificultad con el idioma (mi ingles es muy malo) entendi todo... explicas muy bien... Ya tienes un subscritor de habla hispana te saluda Jose Grillo desde Venezuela
can you help me with one problem , i want to deploy the smart contract throught the frontend to create token directly , how can i deploy smart contract form react
Artur, I am getting a warning in VSC that I need to include "contractListened" in the useEffect hook as a dependency but if I include it, the page does not load at all, otherwise it all works fine but I rather not have that warning....?
Hello, Your video is really great and easy to understand. However, the way DEXs display the latest transactions is as buy/sell. I'm wondering how they can distinguish transactions from or to liquidity pools to determine whether it's a buy/sell? I really look forward to your assistance. Many thanks!!!
i think it's just a matter of UI structuring and selecting write words/phrases. If the customer has selected USDT/ETH pair and got USDT then it's buy, opposite is sell :)
Great video. I learnt alot. You copied the contract ABI from remix after deploying your smart contract. Is the ABI unique to individual contracts? Asking because the app works with DAI even though you didn't change the ABI code. Can you please explain this?
Can you do a video explaining the code of a taxed crypto token like Shibnobi? I am really trying to understand how to create my own custom tokens, but I am reaching some roadblocks. Eventually I would like to be able to build my own dapps like this, but first I need to actually understand how to create my own token.
Hello, your video is amazing. But when I refresh this remix ide page, the orange buttons don't come up without deploying the contract. Do I have to deploy the contract every time? How can I save this contract and use the orange functions over and over after deploying it.
You can't use over and over contracts deployed to JavaScript VM. However you may deploy your contracts to real or test network. Then you can get back to Remix IDE, keep the code and just provide contract address that you've deployed previously. Orange buttons will "talk" to your contract ;)
I have added approve function and it is functioning properly, but facing issue in adding tranferFrom function. Can u please explain how to add transferFrom function in React.js? Thanks!
@@ArturChmaro In transferFrom function, we have to connect with the 'spender' address which is approved in 'approve' function to transfer tokens from owner to recipient address. So, how could we switch account from owner to 'spender' address. Please explain transferFrom handler in detail. const handleTransferFrom = async(e)=>{ e.preventDefault(); const data = new FormData(e.target); const provider = new ethers.providers.Web3Provider(window.ethereum); await provider.send("eth_requestAccounts", []); const signer = await provider.getSigner(); **....../it signed the transaction with metamask zero account, however here we need to connect with the 'spender' address which is approved through erc20.approve(data.get("spender"), data.get("amount")) .......** const erc20 = new ethers.Contract(contractInfo.address, erc20_dapp_abi,signer); await erc20.transferFrom(data.get("owner"), data.get("recipient"), data.get("amount")); };
thanks for amazing video i just wanted to understand, i have nft based website, the website is developed using custom code, meta mask is connected, we want to implement a feature to buy nft, but we want to get some percentage amount when user buy nft from my market place, will this concept of Smart Contract will help in such case, means i will do two transactions, one will be nft fees to be shared with the nft owner and the other one would be some percentage to be shared in my accounts, is that possible ?
First of all, thank you for the reply. My apologies for missing explanation there, is there a way for us to listen to a contract address and get a notification when the CA is already live?
@@mchuatak yes, after sending transaction store transaction hash in the variable. Get the receipt (use ethers or other library for that). Transaction receipt should contain contract address :)
Interesting, Artur. I've sent my email to you as well as said Hi to your facebook. Hope I will get reply soon for my next desire after disccusion. Thanks
@@ArturChmaro Sorry, my question was vague... I was talking about a claim system, as the address of the ''earn'' tokens (primary) transfers to my address (local user), understand?
![Master Ethers.js for Blockchain Step-by-Step [Full Course]](http://i.ytimg.com/vi/yk7nVp5HTCk/mqdefault.jpg)
![Master Ethers.js for Blockchain Step-by-Step [Full Course]](/img/tr.png)
🛠 Web3 Starter for JS Devs (email course): bit.ly/web3starter
Can you please make a video on how to integrate react with TON smart contract also Boss
bro your like the only person on youtube who can explain this correctly
Thanks Brandon, glad it helped you!
Totally
Yes! This is absolutely amazing! This is the first React/Web3 tutorial that I can actually get to work without any errors. Thank you so much Artur. 😎
Great to hear!
Dope tutorial my guy. You explained exactly what i needed to know. Will be adding this to Street Credit functionality
Great to hear!
Thank you Artur for contributing to my education. A transaction is not being mined. It is the nonce that is being mined. Transactions are paided for and given to the miners on the network into the transaction mempool list. The miner who finds the nonce that produces the special 256 bit hash gets to add a list of transactions to the new block based on highest gas price first in descending order which is all programmed for the miner. They do this because the miner wants to get paid more.
Thank you so much brother, just what I needed. You are the best !!!
One of most explainatory tutorial of dapps🌱🌻
Thank you! Exactly what I needed!
Glad it helped!
Very nice lesson - thank you so much!
Glad you like it!
Thank you for sharing your knowledge ... despite the difficulty with the language (my English is very bad) I understood everything ... you explain very well ...
You already have a Spanish-speaking subscriber, Jose Grillo greets you from Venezuela
ESPAÑOL
Gracias por compartir tus conocimiento ... a pesar de la dificultad con el idioma (mi ingles es muy malo) entendi todo... explicas muy bien...
Ya tienes un subscritor de habla hispana te saluda Jose Grillo desde Venezuela
Awesome, thank you Jose!
again, my life saver, thanks man!
Glad to hear it!
Amazing sir, Thanks a lot for an wonderfull session.
Always welcome
can you help me with one problem , i want to deploy the smart contract throught the frontend to create token directly , how can i deploy smart contract form react
Is it possible to retrieve last 10 smart contacts details? As we retrieve last 10 transactions in ether.js?
thx man really helpful
Nice video. Truly appreciate it. can you kindly do a video to monitor liquidity in ethers.js
Artur, I am getting a warning in VSC that I need to include "contractListened" in the useEffect hook as a dependency but if I include it, the page does not load at all, otherwise it all works fine but I rather not have that warning....?
Sir thank you so much for the tutorial, Can I use this smart contract on my web3 project ?
Hello,
Your video is really great and easy to understand. However, the way DEXs display the latest transactions is as buy/sell. I'm wondering how they can distinguish transactions from or to liquidity pools to determine whether it's a buy/sell?
I really look forward to your assistance.
Many thanks!!!
i think it's just a matter of UI structuring and selecting write words/phrases. If the customer has selected USDT/ETH pair and got USDT then it's buy, opposite is sell :)
Great tutorial. I’ve got a question, what’s the difference between sendTransaction, and writeContract, using transfer abi ?
sendTransaction = used mainly for just sending raw transactions like ETH from one wallet to another
writeContract = interacting with smart contracts
Great tutorial 🙏
Glad you think so!
@@ArturChmaro 🌹
how about for ico smart contract? should i make abi ico smart contract only or also the token smart contract?
Is there any complete from 0 to 1 guide to all of these connectivity, like some course, youtube video or any article please recommend me thanks
Super teacher 🤙🔥
Thank you! 😃
@@ArturChmaro 🦾🐠
Code doesn't run. there are some issues with the window.ethereum expression
Do you have metamask wallet extension in your browser? 😊
excellent!
Great video. I learnt alot.
You copied the contract ABI from remix after deploying your smart contract. Is the ABI unique to individual contracts?
Asking because the app works with DAI even though you didn't change the ABI code. Can you please explain this?
ABI is a schema of contract. If your contract has the same functions as another contract then parts of schema are matching
Can you do a video explaining the code of a taxed crypto token like Shibnobi? I am really trying to understand how to create my own custom tokens, but I am reaching some roadblocks. Eventually I would like to be able to build my own dapps like this, but first I need to actually understand how to create my own token.
thnks alot bro!!!!
Always welcome
can you give for me the abi json file in this video?
you are an absolute chad
please, make a video on how to handle royalty in opesea.
Good idea, thanks Ashu! Can't promise when I will shoot it. Pretty busy atm
Hello, your video is amazing. But when I refresh this remix ide page, the orange buttons don't come up without deploying the contract. Do I have to deploy the contract every time? How can I save this contract and use the orange functions over and over after deploying it.
You can't use over and over contracts deployed to JavaScript VM. However you may deploy your contracts to real or test network. Then you can get back to Remix IDE, keep the code and just provide contract address that you've deployed previously. Orange buttons will "talk" to your contract ;)
For every transaction that requires a state change, do we need to re-define the provider, signer and other stuff?
Nope. You can keep the same provider/signer for other calls ;)
how to make buy and sell smartcontract?
I have a question , do you use solidity ? Or Just web3?
Yes, I'm using Solidity :)
Great video really helped me out but next time can you raise you mic it's a tad hard to hear.
Will do Henry! Glad you like it
I have added approve function and it is functioning properly, but facing issue in adding tranferFrom function. Can u please explain how to add transferFrom function in React.js? Thanks!
What issues are you facing?
@@ArturChmaro In transferFrom function, we have to connect with the 'spender' address which is approved in 'approve' function to transfer tokens from owner to recipient address. So, how could we switch account from owner to 'spender' address. Please explain transferFrom handler in detail. const handleTransferFrom = async(e)=>{
e.preventDefault();
const data = new FormData(e.target);
const provider = new ethers.providers.Web3Provider(window.ethereum);
await provider.send("eth_requestAccounts", []);
const signer = await provider.getSigner(); **....../it signed the transaction with metamask zero account, however here we need to connect with the 'spender' address which is approved through erc20.approve(data.get("spender"), data.get("amount")) .......**
const erc20 = new ethers.Contract(contractInfo.address, erc20_dapp_abi,signer);
await erc20.transferFrom(data.get("owner"), data.get("recipient"), data.get("amount"));
};
I did not understand the part of the event, could you give an explanation ?
What exactly would you like to grasp?
@@ArturChmaro The part of useEffect that you explain , i didn't understand
How do you save deployed contract
All you need is it's address. You may find it in the block explorer on the transaction that deployed the contract
thanks for amazing video
i just wanted to understand, i have nft based website, the website is developed using custom code, meta mask is connected, we want to implement a feature to buy nft, but we want to get some percentage amount when user buy nft from my market place, will this concept of Smart Contract will help in such case, means i will do two transactions, one will be nft fees to be shared with the nft owner and the other one would be some percentage to be shared in my accounts, is that possible ?
So, you want to charge fees on your NFT marketplace.
Yes, it's possible.
Is it possible to listen to an event and check for “open trading”?
What open trading you mean? At some DeFi protocol?
First of all, thank you for the reply. My apologies for missing explanation there, is there a way for us to listen to a contract address and get a notification when the CA is already live?
@@mchuatak yes, after sending transaction store transaction hash in the variable. Get the receipt (use ethers or other library for that). Transaction receipt should contain contract address :)
No, what i mean is like sniping a new contract address until it’s live. Not my token. Do you think that's possible?
Never done it. Perhaps you have to learn about mempool and analyzing transactions that are waiting to be mined.
Interesting, Artur. I've sent my email to you as well as said Hi to your facebook. Hope I will get reply soon for my next desire after disccusion. Thanks
How transfer main address from my address?
Just send funds from one address to another. Not sure if I got the question right though...
@@ArturChmaro Sorry, my question was vague... I was talking about a claim system, as the address of the ''earn'' tokens (primary) transfers to my address (local user), understand?
сними по нашему такое же
Yo The Artur ..... H
Yo!
Course didnt age well.
Why? Crypto is down, but smart contracts are still useful
Getting this error on the codesandbox code: erc20.name is not a function
Anything i'm missing there?
Perhaps you are calling wrong address/network?