2

I have this two kind of codes and I would like to know what is the difference between them:

First. .sign()

var tx = new Tx(rawtx);
tx.sign(privateKey);

Second .signTransaction()

web3.eth.accounts.signTransaction(tx, privateKey)

When should be used each of them?

2

I believe those are just two different libraries, so their methods have different names.

The first one looks like ethereumjs-tx, and the second one looks like web3.js 1.0 beta.

  • is there any difference between them when we use them? – sapiensapiens Sep 6 '18 at 17:29
  • 1
    They have different capabilities, but if you're just signing a transaction with a private key that you know, both methods will work. – smarx Sep 6 '18 at 18:05

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