const Web3 = require("web3");
const web3 = new Web3(new Web3.providers.HttpProvider("https://rinkeby.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537"));
const toAddress = "0x7a0e3AB3c9626018850c06A099981F0B1f183D95";
const privateKey = "개인키";
web3.eth.accounts.signTransaction({
      to: toAddress,
      value: "300000000000000000",
      chainId: 4,
      gas: 210000
  }, privateKey, function (err, result) {
      if (err) {
          console.error(err);
          return;
      }
      console.log('rawTransaction ${result.rawTransaction}');
      web3.eth.sendSignedTransaction(result.rawTransaction).on('receipt', console.log);
  });

var Web3 = require("web3")
var web3 = new Web3("https://ropsten.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537")
var privateKey = "개인키"
const toAddress = "0x7a0e3AB3c9626018850c06A099981F0B1f183D95";

var tx = {
 to: toAddress,
 value: "300000000000000000",
 chainId: 3,
 gas: 21000
}

const app = async () => {
  try {
   var signed = await web3.eth.accounts.signTransaction(tx, privateKey);
   console.log('SIGN', web3.eth.sendSignedTransaction(signed.rawTransaction));

  }catch (error) { console.log('Task Failure',error);
 }
};
app();

# chainId
    0: Olympic, Ethereum public pre-release testnet
    1: Frontier, Homestead, Metropolis, the Ethereum public main network
    1: Classic, the (un)forked public Ethereum Classic main network, chain ID 61
    1: Expanse, an alternative Ethereum implementation, chain ID 2
    2: Morden, the public Ethereum testnet, now Ethereum Classic testnet
    3: Ropsten, the public cross-client Ethereum testnet
    4: Rinkeby, the public Geth PoA testnet
    42: Kovan, the public Parity PoA testnet
    77: Sokol, the public POA Network testnet
    99: Core, the public POA Network main network
    7762959: Musicoin, the music blockchain

var Web3 = require("web3")
var web3 = new Web3("https://rinkeby.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537")
var privateKey = "0xA209084D071D63F598EB5C3A1B315CE8BDFED7906FF6D071CDADAB34244AAA69"
const toAddress = "0x7a0e3AB3c9626018850c06A099981F0B1f183D95";

var tx = {
 to: toAddress,
 value: "300000000000000000",
 chainId: 4,
 gas: 21000,
 gasLimit : 9000
}

const app = async () => {
  try {
   var signed = await web3.eth.accounts.signTransaction(tx, privateKey);
   console.log('SIGN', web3.eth.sendSignedTransaction(signed.rawTransaction));

  }catch (error) { console.log('Task Failure',error);
 }
};
app();

const Tx = require('ethereumjs-tx').Transaction
var Web3 = require('web3')
var web3 = new Web3(new Web3.providers.HttpProvider("https://rinkeby.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537"));

// set token source, destination and amount
var myAddress = "0x908C1B696B38B2647D93280d6b9deB951D61fA50"
var toAddress = "0xFf0797D06e8F9897B1D5066C10D9497Ed7054A47"
var amount = web3.utils.toHex(1e16)

// get transaction count, later will used as nonce
web3.eth.getTransactionCount(myAddress).then(function(v){console.log(v); count = v}) 

// set your private key here, we'll sign the transaction below
var privateKey = new Buffer('개인키', 'hex') 

// Get abi array here https://etherscan.io/address/0x86fa049857e0209aa7d9e616f7eb3b3b78ecfdb0#code
var abiArray = [{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},
{"constant":false,"inputs":[],"name":"stop","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},
{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},
{"constant":false,"inputs":[{"name":"owner_","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},
{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},
{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],
"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint128"}],"name":"push","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"name_","type":"bytes32"}],"name":"setName","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"mint","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"stopped","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"authority_","type":"address"}],"name":"setAuthority","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"wad","type":"uint128"}],"name":"pull","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"burn","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"start","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"authority","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"},{"name":"guy","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"symbol_","type":"bytes32"}],"payable":false,"type":"constructor"},{"anonymous":true,"inputs":[{"indexed":true,"name":"sig","type":"bytes4"},{"indexed":true,"name":"guy","type":"address"},{"indexed":true,"name":"foo","type":"bytes32"},{"indexed":true,"name":"bar","type":"bytes32"},{"indexed":false,"name":"wad","type":"uint256"},{"indexed":false,"name":"fax","type":"bytes"}],"name":"LogNote","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"authority","type":"address"}],"name":"LogSetAuthority","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"}],"name":"LogSetOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]
// Here you may get the abicode from a string or a file, here is a string case
// var abiArray = JSON.parse('[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"stop","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"owner_","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint128"}],"name":"push","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"name_","type":"bytes32"}],"name":"setName","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"mint","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"stopped","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"authority_","type":"address"}],"name":"setAuthority","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"wad","type":"uint128"}],"name":"pull","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"burn","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"start","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"authority","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"},{"name":"guy","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"symbol_","type":"bytes32"}],"payable":false,"type":"constructor"},{"anonymous":true,"inputs":[{"indexed":true,"name":"sig","type":"bytes4"},{"indexed":true,"name":"guy","type":"address"},{"indexed":true,"name":"foo","type":"bytes32"},{"indexed":true,"name":"bar","type":"bytes32"},{"indexed":false,"name":"wad","type":"uint256"},{"indexed":false,"name":"fax","type":"bytes"}],"name":"LogNote","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"authority","type":"address"}],"name":"LogSetAuthority","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"}],"name":"LogSetOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]', 'utf-8')

var contractAddress = '0xfcc242afa8d4f14c32d14798efc7110beadb1659'
var contract = new web3.eth.Contract(abiArray, contractAddress, {from: myAddress})

web3.eth.getTransactionCount(myAddress, (err, txCount) => {
    const app = async () => {
    try {
        var rawTransaction = {"from":myAddress,
         "gasPrice":web3.utils.toHex(2 * 1e9),
        "gasLimit":web3.utils.toHex(210000),
        "to":contractAddress,"value":"0x0",
        "data":contract.methods.transfer(toAddress, amount).encodeABI(),
        "nonce":web3.utils.toHex(txCount)}
        var transaction = new Tx(rawTransaction,{'chain':'rinkeby'})
        transaction.sign(privateKey)

        web3.eth.sendSignedTransaction('0x' + transaction.serialize().toString('hex'))

        }catch (error) { console.log('Task Failure',error);
        }
    }
    app();
})

// check the balance
contract.methods.balanceOf(myAddress).call().then(function(balance){console.log(balance)})

 Task Failure { Error: invalid number value (arg="wad", coderType="uint256", value="19e16")

 const Tx = require('ethereumjs-tx').Transaction
var Web3 = require('web3')
var web3 = new Web3(new Web3.providers.HttpProvider("https://rinkeby.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537"));

// set token source, destination and amount
var myAddress = "0x908C1B696B38B2647D93280d6b9deB951D61fA50"
var toAddress = "0xFf0797D06e8F9897B1D5066C10D9497Ed7054A47"
//var amount = web3.utils.toWei(1, 'ether');

var tokens = 3
var amount = web3.utils.toWei(tokens.toString(), 'ether')

// get transaction count, later will used as nonce
web3.eth.getTransactionCount(myAddress).then(function(v){console.log(v); count = v}) 

// set your private key here, we'll sign the transaction below
var privateKey = new Buffer('개윈퀴', 'hex') 

// Get abi array here https://etherscan.io/address/0x86fa049857e0209aa7d9e616f7eb3b3b78ecfdb0#code
var abiArray = [{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},
{"constant":false,"inputs":[],"name":"stop","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},
{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},
{"constant":false,"inputs":[{"name":"owner_","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},
{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},
{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],
"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint128"}],"name":"push","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"name_","type":"bytes32"}],"name":"setName","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"mint","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"stopped","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"authority_","type":"address"}],"name":"setAuthority","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"wad","type":"uint128"}],"name":"pull","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"burn","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"start","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"authority","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"},{"name":"guy","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"symbol_","type":"bytes32"}],"payable":false,"type":"constructor"},{"anonymous":true,"inputs":[{"indexed":true,"name":"sig","type":"bytes4"},{"indexed":true,"name":"guy","type":"address"},{"indexed":true,"name":"foo","type":"bytes32"},{"indexed":true,"name":"bar","type":"bytes32"},{"indexed":false,"name":"wad","type":"uint256"},{"indexed":false,"name":"fax","type":"bytes"}],"name":"LogNote","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"authority","type":"address"}],"name":"LogSetAuthority","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"}],"name":"LogSetOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]
// Here you may get the abicode from a string or a file, here is a string case
// var abiArray = JSON.parse('[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"stop","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"guy","type":"address"},{"name":"wad","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"owner_","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint128"}],"name":"push","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"name_","type":"bytes32"}],"name":"setName","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"mint","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"stopped","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"authority_","type":"address"}],"name":"setAuthority","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"src","type":"address"},{"name":"wad","type":"uint128"}],"name":"pull","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"wad","type":"uint128"}],"name":"burn","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"dst","type":"address"},{"name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"start","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"authority","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"src","type":"address"},{"name":"guy","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"symbol_","type":"bytes32"}],"payable":false,"type":"constructor"},{"anonymous":true,"inputs":[{"indexed":true,"name":"sig","type":"bytes4"},{"indexed":true,"name":"guy","type":"address"},{"indexed":true,"name":"foo","type":"bytes32"},{"indexed":true,"name":"bar","type":"bytes32"},{"indexed":false,"name":"wad","type":"uint256"},{"indexed":false,"name":"fax","type":"bytes"}],"name":"LogNote","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"authority","type":"address"}],"name":"LogSetAuthority","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"}],"name":"LogSetOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]', 'utf-8')

var contractAddress = '0xfcc242afa8d4f14c32d14798efc7110beadb1659'
var contract = new web3.eth.Contract(abiArray, contractAddress, {from: myAddress})

web3.eth.getTransactionCount(myAddress, (err, txCount) => {
    const app = async () => {
    try {
        var rawTransaction = {"from":myAddress,
         "gasPrice":web3.utils.toHex(2 * 1e9),
        "gasLimit":web3.utils.toHex(210000),
        "to":contractAddress,"value":"0x0",
        "data":contract.methods.transfer(toAddress, amount).encodeABI(),
        "nonce":web3.utils.toHex(txCount)}
        var transaction = new Tx(rawTransaction,{'chain':'rinkeby'})
        transaction.sign(privateKey)

        web3.eth.sendSignedTransaction('0x' + transaction.serialize().toString('hex'))

        }catch (error) { console.log('Task Failure',error);
        }
    }
    app();
})

// check the balance
contract.methods.balanceOf(myAddress).call().then(function(balance){console.log(balance)})

 <iframe src="https://www.facebook.com/plugins/post.php?href=https%3A%2F%2Fwww.facebook.com%2Fgodam21321duc%2Fposts%2F2662232697177879&width=500" width="500" height="191" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowTransparency="true" allow="encrypted-media"></iframe>

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <script src="../js/web3.min.js"></script>
</head>
<body>

  <h1>Get ERC20-Token Balance</h1>

  <h2>Contract Address</h2>
  <input type="text" id="contract-address" size="80" oninput="onAddressChange()"></input>
  <p>ex> 0xcd45a142d109bbc8b22ff6028614027d1db4e32f</p>

  <h2>Wallet Address</h2>
  <input type="text" id="wallet-address" size="80" oninput="onAddressChange()"></input>
  <p>ex> 0x528018c88448f67d2b618a43546cf7e0b026857e</p>

  <h2>Result</h2>
  <span id="result"></span>

  <script>

    function getERC20TokenBalance(tokenAddress, walletAddress, callback) {

   
      let minABI = [
     
        {
          "constant":true,
          "inputs":[{"name":"_owner","type":"address"}],
          "name":"balanceOf",
          "outputs":[{"name":"balance","type":"uint256"}],
          "type":"function"
        },
        // decimals
        {
          "constant":true,
          "inputs":[],
          "name":"decimals",
          "outputs":[{"name":"","type":"uint8"}],
          "type":"function"
        }
      ];

    
      let contract = web3.eth.contract(minABI).at(tokenAddress);
 
      contract.balanceOf(walletAddress, (error, balance) => {
    
        contract.decimals((error, decimals) => {
       
          balance = balance.div(10**decimals);
          console.log(balance.toString());
          callback(balance);
        });
      });
    }

    function onAddressChange(e) {
      let tokenAddress = document.getElementById('contract-address').value;
      let walletAddress = document.getElementById('wallet-address').value;
      if(tokenAddress != "" && walletAddress != "") {
        getERC20TokenBalance(tokenAddress, walletAddress, (balance) => {
          document.getElementById('result').innerText = balance.toString();
        });       
      }
    }

    window.onload = function() {
      if (typeof web3 !== 'undefined') {
        web3 = new Web3(web3.currentProvider);
      } else {
        web3 = new Web3(new Web3.providers.HttpProvider("https://ropsten.infura.io/v3/f76f49a440bf4303ab6d2c1aa21c7537"));
      }
      console.log(web3.version);
    }

  </script>
  <p>ex> https://mainnet.infura.io</p>
</body>
</html>