Kutuma Tokeni Kwa Kutumia ethers.js

ETHERS.JS

ERC-20

TOKENS

Mwanzo

Kim YongJun

6 Aprili 2021

3 soma ndani ya dakika

Tuma Tokeni Kwa Kutumia ethers.js(5.0)

Katika Somo Hili Utajifunza Jinsi ya

Ingiza ethers.js
Hamisha tokeni
Weka bei ya gesi kulingana na hali ya msongamano wa mtandao

Ili Kuanza

Ili kuanza, ni lazima kwanza tuingize maktaba ya ethers.js kwenye javascript yetu Jumuisha ethers.js(5.0)

Kusakinisha

/home/ricmoo> npm install --save ethers

ES6 katika Kivinjari

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

ES3(UMD) katika 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 si ether)
send_token_amount: Kiasi unachotaka kutuma kwa mpokeaji
to_address: Anwani ya mpokeaji
send_account: Anwani ya mtumaji
private_key: Ufunguo binafsi wa mtumaji ili kusaini muamala na kuhamisha tokeni

Tangazo

signTransaction(tx) imeondolewa kwa sababu sendTransaction() inaifanya ndani kwa ndani.

Taratibu za Kutuma

1. Unganisha na mtandao (testnet)

Weka Mtoa Huduma (Infura)

Unganisha na Ropsten testnet

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

2. Tengeneza mkoba

let wallet = new ethers.Wallet(private_key)

3. Unganisha Mkoba na mtandao

let walletSigner = wallet.connect(window.ethersProvider)

4. Pata bei ya sasa ya gesi

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

5. Bainisha Muamala

Vigezo hivi vilivyobainishwa 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. Hamisha

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

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
)

Imefanikiwa!

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) {
      // utumaji wa tokeni wa jumla
      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("tokeni imetumwa")
      })
    } // utumaji wa ether
    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("Kutuma kumekamilika!")
        })
      } catch (error) {
        alert("imeshindwa kutuma!!")
      }
    }
  })
}

Ukurasa ulisasishwa mwisho: 3 Machi 2026