Questions tagged [dapp-development]
Questions regarding the development of decentralized applications (a.k.a. DApps). This can include everything from frontend development questions to interaction with the blockchain and distributed file storage.
764
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WebSocket connection Failed when using Helia in react app
I have been trying to use helia in my react.js application but keep getting the following error in the console:
WebSocket connection to ‘wss://ny5.bootstrap.libp2p.io/p2p/...
0
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1
answer
27
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Alert after spending approval
This is a simple dAPP i am running via metamask.
I have tried many things.
window.alert(`Connected Successfully`);
I have tried to add this window.alert to my code but it wont do much.
async function ...
- 1
1
vote
1
answer
37
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Metamask getBalance method doesnt work
When I wanted show my eth balance in my web site it gives me this "0x103cf17cc1518eb4" how can i turn into string?
- 25
1
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0
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14
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How to inspect MetaMask
I was wondering how can I listen to the requests & data that are being sent between the MetaMask extension & DApp, My purpose is to inspect how is MetaMask reacting to DApp requests so that I ...
- 129
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7
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truffle migration error
this is the truffle-config.js file:
const path = require("path");
module.exports = {
// See <http://truffleframework.com/docs/advanced/configuration>
// to customize your Truffle ...
- 11
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45
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Smart contrat working in remix ide but actions not working with web3.js html interface, only displays work and i can't figure out where and why it is
first of all thank you for your time reading this.
I'm trying to learn and play with solidity on polygon mumbai blockchain.
I worked with internet forums, videos and chatgpt4.
Here is some details ...
1
vote
1
answer
32
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NFT smart contract review
I wrote an NFT smart contract based on OpenZeppelin documentation, I request you to review this smart contract and tell me if it is safe, complete and in terms of writing is clean and professional.
...
- 63
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21
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Not able to relay meta transactions to Biconomy's relayer
When I try to send signed transactions, the transactions are successful but from my personal Account and not Biconomy!!
I'm using Web3 + Personal Sign custom implementation on a basic ERC20 token ...
2
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2
answers
31
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How to Reduce Wallet Prompts for Enhanced User Experience in a Blockchain Gaming dApp?
I am developing a gaming dApp on the Ethereum network and aim to optimize the user experience, particularly in interactions with the blockchain. A major challenge is the frequent Metamask prompts ...
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32
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Newbie to hardhat, I am able to make transactions to smart contract but when I return a data it complains: Calling an account which is not a contract
I am a complete newbie in hardhat, web3 and smart contracts. I wrote a simple sol file:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;
contract CreatorRegistry {
struct Creator {
...
- 101
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0
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314
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wallet connect button integration using web3Modal
I'm trying to integrate wallet connect to my dApp using web3modal.
Link to the docs -> https://docs.walletconnect.com/2.0/web3modal/react/installation
The dApp is about token swapping.
When I try ...
- 35
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169
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Alternatives to WalletConnect on React native - to connect MetaMask blockchain wallet to React native app
I’m building a blockchain app on react native, and working with the WalletConnect package to connect a MetaMask/CoinBase wallet to my app, this has proven very challenge due to inconsistent ...
- 1
1
vote
2
answers
111
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Queries on Base Chain layer 2
I am a web3 developer and want to use Base Chain layer 2 solution for my contract, but i am little confused.
Does just deploying on base testnet enables all benefit of layer2?
How to use Base ...
- 665
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1
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15
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Doubt related to interface
We know openzeppelin has an interface named IERC20.sol, my doubt is related to interface.
As this interface has functions like:
function transfer(address to, uint256 amount) external returns (bool);
...
- 665
1
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0
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23
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How to update a simple DApp(Decentralized) with older dfx version to latest one?
I'm trying to deploy my DApp and while the process, I am prompted to update my dfx to above version 0.12.x. But after updating my dfx I'm not able to run my existing DApp locally.
So, I reverted the ...
- 11
2
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2
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63
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Best, free web3 tutorials? Basically how to learn building dapps
What are other resources ppl really like? Would love to learn what else is out there, particularly the free ones.
[Edit] Adding a few of the most popular below:
Ethereum.org's NFT series -- you'll ...
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1
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52
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I am facing issue while calling withdraw function from react
I have a withdraw function in solidity script:
function withdraw() public onlyOwner {
(bool sent, ) = owner.call{value: 0.00025 ether}("");
require(sent);
}
Technically ...
- 665
1
vote
1
answer
58
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On-Chain-Off-Chain Synchronization
What are the best ways you have come across (or are doing) to take on-chain data and create off-chain data while avoiding synchronization bugs?
I am interested to see multiple approaches to this as I ...
- 133
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11
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Does anyone know how to work with DeSo
I was curious to develop a decentralized social network platform. and there are ways but i found this DeSo and i am not quite understanding it properly is there anyone that can help me with it
- 77
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15
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Is a multisig a kind of state channel application?
I would like to know if a multisig is a kind of state channel application?
- 665
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18
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Need help with a hacked MM defi wallet
How do I find software to run on my hacked defi wallet so I’m can beat the hacker to my tokens which he is harvesting from my staking which produces tokens 24/7.
- 1
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1
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187
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Frame size of X bytes exceeds maximum accepted frame size
I'm attempting to calculate slippage of the past X number of blocks to determine if a potential trade is likely to slip beyond the threshold 1% level. If it does I will cancel the trade.
To do this, ...
0
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2
answers
18
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We are developing a todo dApp and when we deploy it to a JavaScriptEVM both in Remix and Hardhat it costs 1.5m gas... Is it ok? Or is it enormous?
This is the contract we are deploying:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;
contract ToDoStorage {
struct ToDoList {
uint256 id;
string name;
string[2][]...
1
vote
1
answer
191
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Can I make a payable function with zero ether value?
I have a payable function in solidity with the price to pay that can be dynamic, in particular, sometimes it can be 0. I can correctly call the payable function when the price is higher than zero, but ...
- 51
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0
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23
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How to transfer money inside truffle console?
When I log in to the truffle console I see there are a bunch of addresses filled with money. I need to transfer an amount to the account that I am using with Metamask. (I don't want to import the ...
- 173
1
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0
answers
21
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React multipage dApp not working on IPFS
I am creating a create app with multiple pages and it uses web3-react (npm package) but when I publish this on IPFS, it doesn't work as expected, and I have tried react-snap for creating static HTML ...
- 61
1
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1
answer
2k
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Error when trying to import ethers into React project
I am getting the following error when trying to import ethers in my React project, using babel:
Failed to compile.
./node_modules/ethers/lib.esm/abi/abi-coder.js 107:2
Module parse failed: Unexpected ...
- 683
0
votes
2
answers
221
views
What is signer?
I am confused with the idea of signer.
What is signer?
What is use of it?
Why signer is important?
When we need to use signer?
- 665
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1
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132
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Have some confusion on hardhat-ethers
In hardhat-ethers we have these helper functions:
function deployContract(name: string, constructorArgs?: any[], signer?: ethers.Signer): Promise<ethers.Contract>;
function getContractFactory(...
- 665
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1
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2k
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what ethers.getContractFactory() does
I want to know everything what ethers.getContractFactory() does. It's parameters, when should I use it, difference between ethers.getContractFactory() and ethers.getContractAt().
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35
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What is ethereum.request and how can define or replace ethereum to make the HTML file running?
This is the html that creates a website where you write messages on the goerli testnetwork via smart contract. Metamask does not pop up and I get a response back shown in the pictures.
<!DOCTYPE ...
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2
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78
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What is the best way to handle and manage user permissions and access in my contract?
As a smart contract developer, it's important to make sure that only authorized users are able to perform certain actions within the contract, while also maintaining the security of the contract and ...
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0
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16
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What projects to land a job as a solidity dev? [duplicate]
Hey yo, I'm a C and Javascript self-taught dude, what's the best projects you could advise me to do for getting a job in solidity ?
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1
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234
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Connecting To Multiple Wallets Simultaneously To Dapp On The Frontend
I'm exploring the possibility of building a Dapp that enables the user to connect multiple wallets simultaneously. The reason is that for my particular use case, the NFT category that I'm observing ...
- 101
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1
answer
468
views
Problems reading emitted events with string data with ethers.js
I have a smart contract that produces NFTs and emits an event when contract is created.
The definition of the event is:
event NewBKNFT(address indexed contractAddress, address indexed publisherAddress,...
- 701
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0
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38
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Create dapps to display sensor output
i want to make a project that can integrate IoT and blockchain. So, can I use the blockchain to store the outputs from the sensors onto the Ethereum blockchain and create a dapps to display the sensor ...
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3
answers
703
views
Where can I buy some ETH Testnet tokens?
we are building a project and are running out of testnet ETH testnet, we have a huge userbase and it needs more testnet Goerli ETH. If you have any suggestions, please, let me know here in the ...
1
vote
2
answers
2k
views
Wagmi can't read function: Error: invalid address or ENS name (argument="name", value=true, code=INVALID_ARGUMENT, version=contracts/5.7.0
Hello everyone,
I use wagmi with rainbowkit and I wanna check wallet address status with function "isApprovedForAll" response will be true or false, but I got undefined and error everytime ...
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1
answer
33
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How can I query the NFTs associated with an account on a local test environment?
I wrote a smart contract which enables accounts to purchase NFTs. I now want to display the NFTs bought and associated with the connected account on a website.
The Alchemy API seems to be a good ...
- 179
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1
answer
240
views
Error while creating a 'Near' application [closed]
I'm trying to create a 'Near' bootstrap application using this command npx create-near-app blockvote --contract js --frontend react --tests js.
This isn't creating bootstrap files as it should.
The ...
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vote
1
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139
views
After running the following code I received from Metamsk Error
import { useWeb3React } from "@web3-react/core";
import { InjectedConnector } from "@web3-react/injected-connector";
const injected = new InjectedConnector({
supportedChainIds : [...
0
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2
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583
views
Integrate smart contract on backend (without metamask and wallet signing transaction)
i have a working dapp on frontend sending transactions and signing them through connected wallet (metamask).
I want to transfert this logic of sending transactions to my backend (nodejs).
so there ...
- 101
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0
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336
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HardhatError: HH700: Artifact for contract 'GovernanceContract' not found
Currently attempting to deploy my smart contracts. However, when running:
npx hardhat run scripts/deploy.js --network localhost
I am getting the following error:
HardhatError: HH700: Artifact for ...
1
vote
2
answers
442
views
How can I fix an connection timeout error when attempting to use the ipfs-http-client javascript module to upload to ipfs using a public gateway
I am currently trying to learn to use ipfs in conjunction with ethereum to create web applications. To help gain an understanding of how ipfs works, I am creating a simple React application that ...
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1
answer
2k
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Error uploading file to IPFS: HTTPError: project id required
Currently making a rudimentary DApp for posting chats, similar to twitter except built on a smart contract. I am using hardhat and running my app on localhost. When creating a profile I want users to ...
0
votes
1
answer
119
views
How can I verify the owner of a signature obtained using personal_sign?
I am validating users during login by requesting for a signature. How can I verify that the signature obtained belongs to the correct account owner?
This is how I'm obtaining the signature :
const ...
- 1
0
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0
answers
124
views
Contract not passing to front end
I am building a chat DApp. I have a smart contract and a mostly complete nextjs front end. My contract is deploying properly however, whenever I call my contract from the front end it doesn't work. My ...
0
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1
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2k
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How to mint NFT using ethers.js?
I'm a beginner in blockchain dev...
I'm using the famous Hashlips ERC721 smart contract (available here: https://github.com/HashLips/hashlips_nft_contract/blob/main/contract/SimpleNft_flat.sol ).
The ...
- 113
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46
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Attempting to connect my smart contract with my front end
I am attempting to build a basic DAO program. My smart contracts are mostly finished and my front end is mostly finished except for of course the blockchain elements. Before I jump into my current ...
1
vote
1
answer
83
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How to sort off-chain
I read this article about sorting an array on an off-chain backend, but there are some things I can't wrap my head around.
For example, say I have an array of times in no particular order arr ...
- 67