ethjs token example

ethjs-token-example.js

var Eth = require('ethjs')
var tokenAbi = require('human-standard-token-abi')
var tokenAddress = '0x48ff0cbac0acefedf152281ee80e9a0a01d5da63'
var secondAddress = '0xC5b8dBAc4c1d3F152cDeb400E2313F309c410aCb'
var eth, token

window.addEventListener('load', function() {
  if (typeof window.web3 !== 'undefined') {
    eth = new Eth(web3.currentProvider)
    // Now enjoy!  Use it!
    window.eth = eth
    startApp()

  } else {
    console.log('Better install MetaMask!')
  }

})

function startApp() {
  const token = eth.contract(tokenAbi).at(tokenAddress)
  window.token = token

  console.log('fetching name')
  token.name().then(function(results) {
    var name = results[0]
    console.log('Coin is named ' + name)
  })

  token.totalSupply()
  .then((results) => {
    var supply = results[0]
    console.log(`There are ${supply.toString()} tokens.`)
  })
  .catch(console.error)

  token.transfer(secondAddress, '10', { from: web3.eth.accounts[0] })
  .then((hash) => {
    console.log('returned!')
    console.dir(hash)

    pollForReceipt(hash)
  })

  token.balanceOf(web3.eth.accounts[0])
  .then((result) => {
    var balance = result[0]
    console.log(`The balance of account ${web3.eth.accounts[0]} is ${balance.toString()}`)
  })
  .catch((error) => {

  })
}

function pollForReceipt(hash, freq) {
  return new Promise((res, rej) => {
    var interval = setInterval(() => {
      eth.getTransactionReceipt(hash)
      .then((receipt) => {
        if (!receipt) return
        clearInterval(interval)
        res(receipt)
      })
      .catch((reason) => {
        clearInterval(interval)
        rej(reason)
      })
    }, freq || 1000)
  })
}