BEP-20 Token Transaction on NodeJs

Question

Hi I'm just confused that how to transact BEP-20 Token(e.g: Binance-Peg BUSD-T). I have simply transact bnb in Binance Smart Chain with this code:

const tx = await web3.eth.accounts.signTransaction({
  to: '0xB1455f4721b32390f4b65F86D2Cd50e74FaD7A99',
  value: '500000000000000',
  gas: 2000000
}, 'SENDER_PRIVATE_KEY');
  
const transaction = await web3.eth.sendSignedTransaction(tx.rawTransaction);

And it work perfectly fine. But I just do absolutely anything to transact a token, for example I used web3.eth.Contract(abi, contract_addr) and then

await contract.methods.transfer(toAddress, '500000000000000000').send({ 
  from: '0xF9FF794700224fc9a1D6a30eb2A90d11eA1D82D1'
});

or with ethereumjs-tx package and ..., but none of them transact the token. I just need a sample code example or a well documented blog to tell me what should I do. Can anyone help me with that ?!!

Answer 1

In order to use the .send({from: ...}) method, you need to

• Have the from account unlocked on your provider.

  OR

• Add its private key to the web3 account wallet (docs)

---

Ulocked provider account

This approach is mostly used on local providers (e.g. Ganache) that fund and unlock some accounts by default.

Keeping an unlocked account on a production provider is unwise, because anyone who queries the provider can send transactions.

---

Web3 account wallet

You need to pass the private key that generates the from address.

web3.eth.accounts.wallet.add(privateKey);

And then you can use the .send({from: ...}) method

await contract.methods.transfer(toAddress, '500000000000000000').send({ 
  from: '0xF9FF794700224fc9a1D6a30eb2A90d11eA1D82D1'
});