Undefined results for "web3.eth.accounts" in truffle console

Question

truffle(development)> web3.eth.accounts[0]

gives output as "undefined"

truffle(development)> web3.eth.accounts

instead of showing all accounts details gives the below output

Accounts {

currentProvider: [Getter/Setter],


_requestManager:

RequestManager {

 provider:

  HttpProvider {
    host: 'http://127.0.0.1:7545',

    httpAgent: [Agent],
    timeout: 0,

    headers: undefined,

    connected: true,

    send: [Function],

   ......blah...blah

but...

truffle(development)> web3.eth.getAccounts

is working. please help

If web3.eth.getAccounts is working, then why don't you simply use it??? As of web3.js v1, web3.eth.accounts is deprecated. — goodvibration, Jan 27 '19 at 08:23
I can use it but I am not able to choose any of the accounts specifically which I was able to do with 'web3.eth.accounts[0]" , please let me know the replacement for this? — Yash Shukla, Jan 27 '19 at 09:06

score 17 · Answer 1 · edited Jan 18 '20 at 07:35

17

from @goodvibration in the comments :

web3.eth.accounts is deprecated.

That is true. in the newer version of web3.js web3.eth.getAccounts returns a promise, so that is why doing :

var accounts = web3.eth.getAccounts();
accounts[0];

will return undefined.

TLDR: use this code instead

web3.eth.getAccounts().then(function(acc){ accounts = acc })
accounts[0]

edited Jan 18 '20 at 07:35

Shrembo

103
4

answered Jan 27 '19 at 09:31

Kaki Master Of Time

3,060
4
19
44

1

I'm getting: "TypeError: Cannot read property 'match' of undefined" – Rexcirus May 28 '19 at 09:11
await is only valid in async function – btc4cash Aug 17 '19 at 19:51
https://web3js.readthedocs.io/en/v1.2.9/web3-eth-accounts.html doesn't say any deprecation. Can you point me a correct place to look at? – Gqqnbig Feb 22 '21 at 05:03

score 7 · Answer 2 · answered Jan 27 '19 at 10:10

7

Use the code below to retrieve all the accounts

   var accounts = web3.eth.getAccounts();

Use this code to reference a single account

   var account0;
   web3.eth.getAccounts().then(function(result){
     account0 = result[0];
   })

answered Jan 27 '19 at 10:10

AlexW

87
2

score 1 · Answer 3 · edited Sep 07 '19 at 15:49

1

One line code: For displaying all accounts use:

web3.eth.getAccounts()

This works perfectly for displaying individual account addresses: You can get the address of the account required by changing the index referenced by the result array in the fall back function

web3.eth.getAccounts().then( function (result) { return result[0] });

edited Sep 07 '19 at 15:49

Shane Fontaine

18,036
20
54
82

answered Sep 07 '19 at 15:35

SREELAKSHMI K.K.

11
1

score 1 · Answer 4 · answered Oct 31 '19 at 18:24

Also remember that MetaMask and other dapp browsers will stop populating the injected Ethereum provider with user accounts by default.

To call getAccountS() you need to use await ethereum.enable() first. Consider this example

const ethereum = window.ethereum;
const web3 = window.web3;
const web3Instance = new Web3(ethereum);
const enabledWeb3 = await ethereum.enable();
const account = await web3Instance.eth.getAccounts();
const accountAddress = await account[0];

This is just an example of what you should be doing now after November 2018. The legacy code will not display the account.

This helped me when using React. A pop-up appeared that said React wanted to connect to my account, and I clicked the button to allow it. — NealWalters, Nov 10 '19 at 21:37

score 1 · Answer 5 · edited Apr 13 '20 at 21:10

1

use this code :

const web=new Web3(window.ethereum.CurrentProvider || "http://localhost:8545")

edited Apr 13 '20 at 21:10

Shane Fontaine

18,036
20
54
82

answered Apr 12 '20 at 03:19

asif waquar

11
1

score 0 · Answer 6 · answered Aug 05 '21 at 05:47

All above solutions are correct with the fact that web3.eth.getAccounts() is returning a promise. But, Just make sure that you have to add await window.ethereum.enable() to actually connect your metamask wallet to the Dapp.

Because my code works after just adding it !!

score 0 · Answer 7 · answered May 14 '20 at 04:29

If web3.eth.accounts is not showing the expected result then, follow these two simple step (Inside the truffle console)

web3.eth.getAccounts().then(function(acc){ accounts = acc })
accounts

That's is... if you want specific account then accounts[0/1/2...9]

Undefined results for "web3.eth.accounts" in truffle console

7 Answers7