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EVM-XCM Jungle Toolkit
  • πŸ“—Introduction
    • 🌴What is the EVM-XCM Jungle Toolkit?
    • 🧐Why use this toolkit?
    • πŸ‘ͺWho is this toolkit made for?
    • βš’οΈWhat tools are this toolkit made of?
  • ↔️Build an EVM+Substrate wallet compatible architecture in your dApp
    • ⁉️Two different standards
      • ℹ️Addresses Format
      • 🎭Public Key vs Hash-based
      • πŸ“©Multichain compatibility
      • ⚑Account Types
    • β˜‘οΈRecommended wallets
      • 🦊MetaMask
      • ☸️SubWallet
      • 🀚Talisman
    • 🟒The EVM address standard
      • πŸ”Get an address for a Signer
        • πŸ‘οΈCheck the validity of the address
      • πŸ’°Get the native balance of a Signer
        • Get an ERC20 token's balance
      • πŸŽ‡Get the chain information for a Signer
    • πŸ”΅The Substrate address standard
      • πŸ”Get an address for a Signer
        • πŸ‘οΈCheck the validity of the address
      • πŸ’°Get the native balance of a Signer
      • πŸŽ‡Get the chain information for a Signer
    • πŸ“§Mapping of addresses
    • 🀝Implement multiple wallet support on your dApp front-end
      • πŸ’šUnderstanding the EVM provider/signer concepts
      • ❀️Understanding the Keyring concept
      • πŸ”‘Sign and send EVM transactions
      • πŸ—οΈSign and send Substrate extrinsics
    • πŸ“šRessources
  • ➑️Build a cross-chain transaction from any EVM-chain to a Substrate-based chain using IBC and XCM
    • ⁉️Understanding the flow
    • πŸ¦‘Transfer tokens to Moonbeam Parachain using Squid SDK from any EVM chain
    • πŸͺCreate & execute a transaction on the source chain before bridging tokens (pre-hook)
    • πŸͺCreate & execute a transaction on Moonbeam after bridging tokens (post-hook)
    • ✨Create & execute a swap using Stellaswap pools to obtain xcTokens
    • πŸ™ŒWrap-up
    • πŸ“šRessources
  • ⬅️Build a cross-chain transaction from a Substrate-based chain to Moonbeam chain
    • ⁉️Understanding the flow
    • πŸ’‘Using LightSpell API to generate valid XCM calls
    • πŸŒ‰Transfer tokens between parachains (or relay chain) using XCM and ParaSpell SDK
    • πŸ™ŒWrap up
    • πŸ“šRessources
  • ⏩Build batches on source and destination chains using Squid and batch precompile
    • ⁉️Understanding the flow
    • πŸ‘ŒUnderstanding the batch precompile
    • βœ…Create a batch transaction compatible with Squid router
    • πŸͺIntegrate a batch into a Hook using Squid
    • πŸ™ŒWrap up
    • πŸ“šRessources
  • πŸ”Build a gas-less transaction from/to an EVM/Substrate chain using callPermit
    • ⁉️Understanding the flow
    • πŸ”‹Generating the data to sign
    • ✍️Collecting the signature
    • 🌐Relaying the signature
    • ⚑Executing the transaction
    • πŸ™ŒWrap up
    • πŸ“šRessources
  • πŸ”€Build a custodial solution to make your dApp wallet-less & gas-less using EIP-712
    • ⁉️Understanding the flow
    • ⛓️Smart contract
    • βš™οΈBack end
  • πŸ”½Examples of working cross-chain dApps made using the Jungle Toolkit
    • 🌴Case Study: The Great Escape
      • The Player Structure
      • The xDeposit Function
      • The xRegister Function
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On this page
  1. Build an EVM+Substrate wallet compatible architecture in your dApp
  2. The EVM address standard
  3. Get an address for a Signer

Check the validity of the address

In this section we'll check the validity of an EVM address using ethers

Check the validity of an EVM address using ethers.js

const { ethers } = require('ethers');

// Specify an Ethereum address to test.
const ethereumAddressToTest = 'testAddy';

// Function to check the validity of an Ethereum address.
const isValidEthereumAddress = (address) => {
  try {
    // Ensure the address is in a valid format.
    const validAddress = ethers.utils.getAddress(address);

    // Check if the formatted address is equal to the original address.
    if (validAddress.toLowerCase() === address.toLowerCase()) {
      return true;
    } else {
      return false;
    }
  } catch (error) {
    return false;
  }
};

// Call the function to check the validity of the specified Ethereum address.
const isValidEthAddress = isValidEthereumAddress(ethereumAddressToTest);

// Output the result.
console.log(`Is this Ethereum address valid? ${isValidEthAddress}`);

Last updated 1 year ago

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