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sogoiii/ListenToEventsWeb3-1-0-0-beta.js

Last active December 26, 2023 23:00
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Revisions

  1. sogoiii revised this gist Jan 22, 2018. 1 changed file with 3 additions and 2 deletions.
    5 changes: 3 additions & 2 deletions ListenToEventsWeb3-1-0-0-beta.js
    View file
    Original file line number Diff line number Diff line change
    @@ -1,10 +1,11 @@
    const Web3 = require('web3') // Works with web3 1.0.0-beta27
    const web3 = new Web3()
    const contractArtifact = require('./build/contracts/TutorialToken.json')

    const web3 = new Web3()
    const providerUrl = 'ws://localhost:8545' // requires # https://github.com/trufflesuite/ganache-cli/releases/tag/v7.0.0-beta.0 or https://github.com/trufflesuite/ganache/releases/tag/v1.1.0-beta.0
    const provider = new Web3.providers.WebsocketProvider(providerUrl)
    web3.setProvider(provider)
    const contractArtifact = require('./build/contracts/TutorialToken.json')

    web3.eth.net.getId()
    .then(networkId => {
    const contractAddr = contractArtifact.networks[networkId].address
  2. sogoiii created this gist Jan 22, 2018.
    27 changes: 27 additions & 0 deletions ListenToEventsWeb3-1-0-0-beta.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,27 @@
    const Web3 = require('web3') // Works with web3 1.0.0-beta27
    const web3 = new Web3()

    const providerUrl = 'ws://localhost:8545' // requires # https://github.com/trufflesuite/ganache-cli/releases/tag/v7.0.0-beta.0 or https://github.com/trufflesuite/ganache/releases/tag/v1.1.0-beta.0
    const provider = new Web3.providers.WebsocketProvider(providerUrl)
    web3.setProvider(provider)
    const contractArtifact = require('./build/contracts/TutorialToken.json')
    web3.eth.net.getId()
    .then(networkId => {
    const contractAddr = contractArtifact.networks[networkId].address
    const TutorialToken = new web3.eth.Contract(contractArtifact.abi, contractAddr)
    TutorialToken.events.Transfer({fromBlock: 0}, function(error, event){ console.log(error) })
    .on('data', (log) => {
    let { returnValues: { from, to, value }, blockNumber } = log
    console.log(`----BlockNumber (${blockNumber})----`)
    console.log(`from = ${from}`)
    console.log(`to = ${to}`)
    console.log(`value = ${value}`)
    console.log(`----BlockNumber (${blockNumber})----`)
    })
    .on('changed', (log) => {
    console.log(`Changed: ${log}`)
    })
    .on('error', (log) => {
    console.log(`error: ${log}`)
    })
    })