Web3.js: getAccounts keeps returning `null` when there are accounts

[woniesong92]

I am trying to fetch available accounts from metamask, and it keeps returning null.

Environment:
web3 v1.0.0, npm 5.3.0, node 8.6.0, Rails 5.1.1, truffle 4.0.5.

Code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<%= javascript_include_tag "web3.min.js" %>

<script>
  $((function() {
    var web3Provider

    if (typeof window.web3 !== 'undefined') {
      // if metamask is on, web3 is injected...
      web3Provider = window.web3.currentProvider
    } else {
      // otherwise, use truffle network...
      web3Provider = new Web3.providers.HttpProvider('http://localhost:9545')
    }

    console.log("web3Provider", web3Provider) // MetamaskInpageProvider

    web3 = new Web3(web3Provider) // {givenProvider: MetamaskInpageProvider .. }

    web3.eth.getAccounts(function(accounts) {
      console.log(accounts) // null
    })
  }))
</script>

[iurimatias]

@woniesong92 it should be

web3.eth.getAccounts(function(error, accounts) {
      console.log(accounts)
    })

[woniesong92]

indeed!

[gerchicov-bp]

I have the same issue:

    var Web3 = require('web3');
var web3 = new Web3();

    // Checking if Web3 has been injected by the browser (Mist/MetaMask)
  if (typeof web3 !== 'undefined') {
      console.log('metamask used');
    // Use Mist/MetaMask's provider
    web3js = new Web3(web3.currentProvider);
  } else {
    console.log('No web3? You should consider trying MetaMask!')
    // fallback - use your fallback strategy (local node / hosted node + in-dapp id mgmt / fail)
    web3js = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));
  }

  web3js.eth.getAccounts(accounts => console.log(accounts[0]));

I see in the chrome console log that accounts variable is undefined

[zerefwayne]

Thank you @iurimatias 👍