web3 智能合约dapp挖矿元宇宙链游系统开发技术详情

获取链信息
const Web3 = require('web3')

async function getChainId() {

const web3 = new Web3('https://http-mainnet.hecochain.com')
let chainId = await web3.eth.getChainId()
console.log(`chain id: ${chainId}`)
return chainId

}

生成账户
const Web3Accounts = require('web3-eth-accounts')

let account = new Web3Accounts().create()
//do not do this on prd env
console.log(account generated. address: ${account.address}, private key: ${account.privateKey})

建立交易
const Web3 = require('web3')

async function transfer(fromAccount, to, value){

const web3 = new Web3('https://http-mainnet.hecochain.com')
let chainId = await web3.eth.getChainId()
let nonce = await web3.eth.getTransactionCount(fromAccount.address)
let gasPrice = await web3.eth.getGasPrice()

let unsigned = {
    from: fromAccount.address,
    to,
    value: web3.utils.numberToHex(web3.utils.toWei(value, 'ether')),
    gasPrice,
    nonce,
    chainId,
}

unsigned.gas = await web3.eth.estimateGas(unsigned)

let signed = await fromAccount.signTransaction(unsigned)
return signed

}