Local Wallets

Local wallets are an in-memory wallet that can hold multiple accounts. Wallets are a convenient way to sign and send transactions in web3.js

warning

If used within the browser, wallets are not saved anywhere and disappear when the page is refreshed. If used within your application, wallets will disappear after the program is completed.

Create an account and add it to an empty Wallet

Creating an Account and Adding it to an Empty Wallet

import { Web3 } from 'web3';

const web3 = new Web3(/* PROVIDER */);

// 1st - creating a new empty wallet (0 accounts inside)
const wallet = web3.eth.accounts.wallet.create();

console.log(wallet);
/* ↳
Wallet(0) [
  _accountProvider: {
    create: [Function: createWithContext],
    privateKeyToAccount: [Function: privateKeyToAccountWithContext],
    decrypt: [Function: decryptWithContext]
  },
  _addressMap: Map(0) {},
  _defaultKeyName: 'web3js_wallet'
]
*/

// 2nd - create an account
const account = web3.eth.accounts.create();

console.log(account)
/* ↳
{
  address: '0x0770B4713B62E0c08C43743bCFcfBAA39Fa703EF',
  privateKey: '0x97b0c07e275a0d8d9983331ca1a7ecb1a4a6f7dcdd7657529fe07446fa4dfe23',
  signTransaction: [Function: signTransaction],
  sign: [Function: sign],
  encrypt: [Function: encrypt]
}
*/

// 3rd - add the account to the wallet
web3.eth.accounts.wallet.add(account);

console.log(wallet);
/* ↳
Wallet(1) [
  {
    address: '0x0770B4713B62E0c08C43743bCFcfBAA39Fa703EF',
    privateKey: '0x97b0c07e275a0d8d9983331ca1a7ecb1a4a6f7dcdd7657529fe07446fa4dfe23',
    signTransaction: [Function: signTransaction],
    sign: [Function: sign],
    encrypt: [Function: encrypt]
  },
  _accountProvider: {
    create: [Function: createWithContext],
    privateKeyToAccount: [Function: privateKeyToAccountWithContext],
    decrypt: [Function: decryptWithContext]
  },
  _addressMap: Map(1) { '0x0770b4713b62e0c08c43743bcfcfbaa39fa703ef' => 0 },
  _defaultKeyName: 'web3js_wallet'
]
*/

Import a privateKey and add it to an empty Wallet

Creating a wallet and adding an account with a private key

import { Web3 } from 'web3';

const web3 = new Web3(/* PROVIDER */);

// 1st - creating a new empty wallet
const wallet = web3.eth.accounts.wallet.create() 

console.log(wallet);
/* ↳
> Wallet(0) [
  _accountProvider: {
    create: [Function: createWithContext],
    privateKeyToAccount: [Function: privateKeyToAccountWithContext],
    decrypt: [Function: decryptWithContext]
  },
  _addressMap: Map(0) {},
  _defaultKeyName: 'web3js_wallet'
]
*/

// 2nd - add an account to the wallet using a private key
const privateKey = '0x4651f9c219fc6401fe0b3f82129467c717012287ccb61950d2a8ede0687857ba'
web3.eth.accounts.wallet.add(privateKey);

console.log(wallet);
/* ↳
Wallet(1) [
  {
    address: '0x9E82491d1978217d631a3b467BF912933F54788f',
    privateKey: '0x4651f9c219fc6401fe0b3f82129467c717012287ccb61950d2a8ede0687857ba',
    signTransaction: [Function: signTransaction],
    sign: [Function: sign],
    encrypt: [Function: encrypt]
  },
  _accountProvider: {
    create: [Function: createWithContext],
    privateKeyToAccount: [Function: privateKeyToAccountWithContext],
    decrypt: [Function: decryptWithContext]
  },
  _addressMap: Map(1) { '0x9e82491d1978217d631a3b467bf912933f54788f' => 0 },
  _defaultKeyName: 'web3js_wallet'
]
*/