Web3.js: web3.eth.accounts[0] returns undefined

[relaxbao]

Hi,
I used web3.js in nodejs, but it always return undefined。I tried a few of ways, but it doesn't work. can you help me?

here is the code

var Web3 = require("web3");
var web3 = new Web3();
web3.setProvider(new web3.providers.HttpProvider('http://localhost:8545'));

var account = web3.eth.accounts[0];
console.log(account);

here is the result:

➜  web3test node test.js
undefined

geth is running:

tfd      20313  5.2  0.7 2158548 117684 pts/3  SNl  16:24   1:08 geth --datadir /home/tfd/workspace/pchain/ --rpc --rpcapi db,admin,debug,eth,miner,net,personal,web3,txpool --rpcaddr localhost --rpcport 8545 --port 30301 --networkid 1108

node version:

➜  web3test node -v       
v8.11.2

Ubuntu 17.10

I also tried var web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545")); but it still doesn't work， even web3.version.api returned undefined.

[barakman]

Have you started some Ethereum client (e.g., Geth, Parity, Ganache, TestRpc) listening at http://localhost:8545?

You should do that, and when you do, you can specify the number of available accounts and the characteristics of each account.

For example (pardon my Windows-ness):

start cmd /c "title ganache-cli & ganache-cli" --port=8545 --gasLimit=0xfffffffffff                                       ^
    --account=0x0000000000000000000000000000000000000000000000000000000000000001,1000000000000000000000000000000000000000 ^
    --account=0x0000000000000000000000000000000000000000000000000000000000000002,1000000000000000000000000000000000000000 ^
    --account=0x0000000000000000000000000000000000000000000000000000000000000003,1000000000000000000000000000000000000000 ^
    --account=0x0000000000000000000000000000000000000000000000000000000000000004,1000000000000000000000000000000000000000 ^
    --account=0x0000000000000000000000000000000000000000000000000000000000000005,1000000000000000000000000000000000000000 ^
    --account=0x0000000000000000000000000000000000000000000000000000000000000006,1000000000000000000000000000000000000000 ^
    --account=0x0000000000000000000000000000000000000000000000000000000000000007,1000000000000000000000000000000000000000 ^
    --account=0x0000000000000000000000000000000000000000000000000000000000000008,1000000000000000000000000000000000000000 

[relaxbao]

Thank you very much！I started geth，and I can get the accounts in geth console with ‘eth.accounts’。 But I can't get the accounts with web3.js。

I start geth with this command:

geth --datadir /home/tfd/workspace/pchain/ --rpc --rpcapi db,admin,debug,eth,miner,net,personal,web3,txpool --rpcaddr localhost --rpcport 8545 --port 30301 --networkid 1108

At 2018-06-20 19:03:32, "barakman" [e-mail] wrote:

Have you started some Ethereum client (e.g., Geth, Parity, Ganache, TestRpc) listening at http://localhost:8545?

You should do that, and when you do, you can specify the number of available accounts and the characteristics of each account.

For example (pardon my Windows-ness):

start cmd /c "title ganache-cli & ganache-cli" --port=8545 --gasLimit=0xfffffffffff ^
--account=0x0000000000000000000000000000000000000000000000000000000000000001,1000000000000000000000000000000000000000 ^
--account=0x0000000000000000000000000000000000000000000000000000000000000002,1000000000000000000000000000000000000000 ^
--account=0x0000000000000000000000000000000000000000000000000000000000000003,1000000000000000000000000000000000000000 ^
--account=0x0000000000000000000000000000000000000000000000000000000000000004,1000000000000000000000000000000000000000 ^
--account=0x0000000000000000000000000000000000000000000000000000000000000005,1000000000000000000000000000000000000000 ^
--account=0x0000000000000000000000000000000000000000000000000000000000000006,1000000000000000000000000000000000000000 ^
--account=0x0000000000000000000000000000000000000000000000000000000000000007,1000000000000000000000000000000000000000 ^
--account=0x0000000000000000000000000000000000000000000000000000000000000008,1000000000000000000000000000000000000000

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[barakman]

What version of web3.js do you have installed?

(Run npm ls web3 from the location of your package.json file).

[relaxbao]

@barakman Thank you !
Here is the result of npm ls web3:

├── UNMET PEER DEPENDENCY [email protected] - 4.x
├── UNMET PEER DEPENDENCY popper.js@^1.14.3
└── [email protected]

npm ERR! peer dep missing: popper.js@^1.14.3, required by [email protected]
npm ERR! peer dep missing: [email protected] - 4.x, required by [email protected]

[mandarvaze]

Please use web3.eth.getAccounts() instead.
AFAIK, web3.eth.accounts[0] used to work in older versions of web3 (0.20.0)