[Ethereum] Convert String to Hex using ethers.js

ethers.js

If I use web3.js I can convert a string to hex with:

web3.utils.toHex('4c7b7ffb66b344fbaa64995af81e355a')

How do I use the same utility for ethers.js?

Best Answer

I couldn't find it in their old documentation but if you check their legacy documentation https://docs.ethers.io/v4/api-utils.html#hex-strings you will find that you can convert any number, BigNumber, hex string or arrayish to hex with the following command:

ethers.utils.hexlify(5) which returns 0x05

Hope this solves your question.

Related Solutions

[Ethereum] How to ethers.js using infura as provider

Yes, ethers.js has an Infura provider.
Since Infura doesn't provide ethereum accounts you have to manage it your side. Ethers.js has wallets that can be used with any of their providers Wallet and signers.

[Ethereum] String to Hex in Ethers.js

I couldn't find such a function in ethers.js (hexlify doesn't accept strings as input), but maybe you'll find this utf8ToHex helper function useful:

function utf8ToHex(str) {
  return '0x' + Array.from(str).map(c =>
    c.charCodeAt(0) < 128 ? c.charCodeAt(0).toString(16) :
    encodeURIComponent(c).replace(/\%/g,'').toLowerCase()
  ).join('');
}

const string = 'test';
const hexString = utf8ToHex(string);
const web3HexString = web3.utils.utf8ToHex(string);
console.log(hexString, web3HexString);

Best Answer

Related Solutions

[Ethereum] How to ethers.js using infura as provider

[Ethereum] String to Hex in Ethers.js

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