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Results tagged with web3js
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user 83193
Javascript API and library for Ethereum To develop applications on Ethereum, you can use the web3 object provided by the web3.js library. Under the hood it communicates to a local node through RPC calls. web3.js works with any Ethereum node, which exposes an RPC layer. https://github.com/ethereum/wiki/wiki/JavaScript-API
2
votes
0
answers
359
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Metamask Error Cannot set properties of undefined (setting 'loadingDefaults')
For the past few days I am below error from metamask. It occurs sometimes and sometimes the transaction is successful. It occurs when I try to transfer tokens from one account to another. The approve …
- 65
2
votes
1
answer
657
views
Metamask does not open on opera using web3modal
I am using web3modal to connect with different wallets. On Mozilla I am able to connect with metamask but when I open my website on Opera GX browser (version: LVL4 (core: 89.0.4447.64)) it says that e …
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1
vote
1
answer
367
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Only the owner of the contract can update the smart contract - Solidity
I am developing a smart contract that holds user information. The problem is that when I try to update the user information from the address that did not deployed the contract, the request is successf …
- 65
1
vote
2
answers
542
views
Make msg.sender to remain constant in solidity nested contracts
I have three different contracts. One is a simple contract (ContractA), second is my token contract and the third one is ERC20 Token contract which is inherited in my token contract. So when I make a …
- 65
0
votes
Accepted
Only the owner of the contract can update the smart contract - Solidity
Answer To The Question
I have figured out a way to deal with this. The problem was the data was being saved correctly but when fetching the records solidity was assigning msg.sender to the creator of …
- 65
0
votes
1
answer
39
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How to make secure transactions in contracts - Solidity
If I have a contract deployed to an exchange. From there I (hacker) can download the abi for that contract. So, now I have the abi and let's say I have the address of the owner (victim) as well. So, n …
- 65