Kutuma Tokeni Kutumia ethers.js

ETHERS.JS

ERC-20

TOKENI

Mwanzilishi

Kim YongJun

6 Aprili 2021

3 dakika za kusoma

Tuma Tokeni Kutumia ethers.js(5.0)

Katika Mafunzo Haya Utajifunza Jinsi Ya

Kuagiza ethers.js
Kuhamisha tokeni
Kuweka bei ya gesi kulingana na hali ya msongamano wa mtandao

Ili-Kuanza

Ili kuanza, lazima kwanza tuagize maktaba ya ethers.js kwenye JavaScript yetu Jumuisha ethers.js(5.0)

Kusakinisha

/home/ricmoo> npm install --save ethers

ES6 kwenye Kivinjari

<script type="module">
  import { ethers } from "https://cdn.ethers.io/lib/ethers-5.0.esm.min.js"
  // Msimbo wako hapa...
</script>

ES3(UMD) kwenye Kivinjari

<script
  src="https://cdn.ethers.io/lib/ethers-5.0.umd.min.js"
  type="application/javascript"
></script>

Vigezo

contract_address: Anwani ya mkataba wa tokeni (anwani ya mkataba inahitajika wakati tokeni unayotaka kuhamisha sio Etha)
send_token_amount: Kiasi unachotaka kutuma kwa mpokeaji
to_address: Anwani ya mpokeaji
send_account: Anwani ya mtumaji
private_key: Ufunguo wa siri wa mtumaji ili kutia saini muamala na kuhamisha tokeni haswa

Ilani

signTransaction(tx) imeondolewa kwa sababu sendTransaction() inafanya hivyo kwa ndani.

Taratibu za Kutuma

1. Unganisha kwenye mtandao (mtandao wa majaribio)

Weka Mtoa Huduma (Infura)

Unganisha kwenye mtandao wa majaribio wa Ropsten

window.ethersProvider = new ethers.providers.InfuraProvider("ropsten")

2. Unda mkoba

let wallet = new ethers.Wallet(private_key)

3. Unganisha Mkoba kwenye mtandao

let walletSigner = wallet.connect(window.ethersProvider)

4. Pata bei ya gesi ya sasa

window.ethersProvider.getGasPrice() // bei ya gesi

5. Fafanua Muamala

Vigezo hivi vilivyofafanuliwa hapa chini vinategemea send_token()

Vigezo vya muamala

send_account: anwani ya mtumaji wa tokeni
to_address: anwani ya mpokeaji wa tokeni
send_token_amount: kiasi cha tokeni za kutuma
gas_limit: kikomo cha gesi
gas_price: bei ya gesi

Tazama hapa chini jinsi ya kutumia

const tx = {
  from: send_account,
  to: to_address,
  value: ethers.utils.parseEther(send_token_amount),
  nonce: window.ethersProvider.getTransactionCount(send_account, "latest"),
  gasLimit: ethers.utils.hexlify(gas_limit), // 100000
  gasPrice: gas_price,
}

6. Hamisho

walletSigner.sendTransaction(tx).then((transaction) => {
  console.dir(transaction)
  alert("Send finished!")
})

Jinsi ya kuitumia

let private_key =
  "41559d28e936dc92104ff30691519693fc753ffbee6251a611b9aa1878f12a4d"
let send_token_amount = "1"
let to_address = "0x4c10D2734Fb76D3236E522509181CC3Ba8DE0e80"
let send_address = "0xda27a282B5B6c5229699891CfA6b900A716539E6"
let gas_limit = "0x100000"
let wallet = new ethers.Wallet(private_key)
let walletSigner = wallet.connect(window.ethersProvider)
let contract_address = ""
window.ethersProvider = new ethers.providers.InfuraProvider("ropsten")

send_token(
  contract_address,
  send_token_amount,
  to_address,
  send_address,
  private_key
)

Imefaulu!

send_token()

function send_token(
  contract_address,
  send_token_amount,
  to_address,
  send_account,
  private_key
) {
  let wallet = new ethers.Wallet(private_key)
  let walletSigner = wallet.connect(window.ethersProvider)

  window.ethersProvider.getGasPrice().then((currentGasPrice) => {
    let gas_price = ethers.utils.hexlify(parseInt(currentGasPrice))
    console.log(`gas_price: ${gas_price}`)

    if (contract_address) {
      // kutuma tokeni kwa ujumla
      let contract = new ethers.Contract(
        contract_address,
        send_abi,
        walletSigner
      )

      // Tokeni ngapi?
      let numberOfTokens = ethers.utils.parseUnits(send_token_amount, 18)
      console.log(`numberOfTokens: ${numberOfTokens}`)

      // Tuma tokeni
      contract.transfer(to_address, numberOfTokens).then((transferResult) => {
        console.dir(transferResult)
        alert("sent token")
      })
    } // kutuma Etha
    else {
      const tx = {
        from: send_account,
        to: to_address,
        value: ethers.utils.parseEther(send_token_amount),
        nonce: window.ethersProvider.getTransactionCount(
          send_account,
          "latest"
        ),
        gasLimit: ethers.utils.hexlify(gas_limit), // 100000
        gasPrice: gas_price,
      }
      console.dir(tx)
      try {
        walletSigner.sendTransaction(tx).then((transaction) => {
          console.dir(transaction)
          alert("Send finished!")
        })
      } catch (error) {
        alert("failed to send!!")
      }
    }
  })
}