How to login ethereum account by privateKey via web3?

Question

Im creating a simple ethereum network and connect via web3js but i dont find any function to find address from privateKey, I use web3.eth.accounts.privateKeyToAddress, but it create a new account with balance 0 while exist address with this privatekey have balance 100

Answer 1

Please use web3.eth.accounts.privateKeyToAccount.

web3.eth.accounts.privateKeyToAccount('0x348ce564d427...');

> {
      address: '0xb8CE9ab6943e0eCED004cDe8e3bBed6568B2Fa01',
      privateKey: '0x348ce564d427...',
      signTransaction: function(tx){...},
      sign: function(data){...},
      encrypt: function(password){...}
  }