eth_call
to call the owner
method from the Uniswap V3: Factory smart contract on Arbitrum. It returns the address owning the smart contract.object
— the transaction call object:
from
— (optional) the string of the address used to send the transaction.to
— the string of the address to which the transaction is directed, a wallet, or a smart contract.gas
— (optional) the maximum amount of gas that can be used by the transaction.gasprice
— (optional) the amount of gas price the sender is willing to pay for each gas unit in Wei.value
— (optional) the value sent with this transaction, encoded as hexadecimal.data
— (optional) additional data to be sent with the call, usually used to invoke functions from smart contracts as a string of the hash of the method signature and encoded parameters. See the Ethereum Contract ABI.quantity or tag
— the integer of a block encoded as hexadecimal or the string with:
latest
— the most recent block in the blockchain and the current state of the blockchain at the most recent blockearliest
— the earliest available or genesis blockpending
— the pending state and transactions block. The current state of transactions that have been broadcast to the network but have not yet been included in a block.data
— the result of executing the specified call on the Ethereum Virtual Machine (EVM), encoded as a hexadecimal string.eth_call
code exampleseth_call
to simulate a transfer or a smart contract transaction, the sender account must have a sufficient balance to cover the associated gas fee.
0x
, indicating a successful transaction. This implies that the transaction will be executed without any errors when the code is used to send the transaction.
eth_call
is calling smart contract functions. For example, interact with an ERC-20 token smart contract deployed on the Arbitrum network and retrieve the balance of a specific account.
The following code uses the web3.js library to call the balanceOf
function of the UNI token smart contract on the Arbitrum network.
getAccountBalance
function is called with the address of the account whose balance we want to retrieve. This function creates a new contract instance calls the balanceOf
function of the smart contract with the provided address and retrieves the account balance in Wei. The balance is then converted to the ethers unit using the fromWei
function of the web3.utils
object.
Finally, the account balance is printed on the console for easy viewing.The result of the call.
The response is of type object
.