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edexaJS ERC20 tutorial

· 3 min read
Gautam Bansal

This tutorial will guide you through the process of deploying and interact an ERC-20 contract using the edexaJS library.

Prerequisite​

  1. Getting Faucet: Before deploying an ERC-20 contract, you'll need testnet EDX coin to cover transaction costs. You can use a faucet to obtain test EDX Coin for the edexa network. Faucet Link
  1. Node Version: Ensure that your Node.js version is greater than 16.

2. Obtaining Private Key​

To interact with the edexa network, you'll need a private key. Here's how you can obtain one:

  • Using Wallets like Metamask

    1. Open your preferred Ethereum wallet, such as Metamask or Trust Wallet.
    2. Navigate to the account settings or account details section.
    3. Look for an option like "Export Private Key" or "View Private Key."
    4. Copy the private key to your clipboard.

    Note: Ensure that the account from which you are obtaining the private key is associated with the edexa network

    Important: Never share your private key publicly, and handle it with the utmost care. It's recommended to use a separate account or wallet for testing purposes.

3. Installing the edexaJS Package​

Use npm to install the edexaJS package:

npm install @edexa/edexajs

4. Creating Signer using edexaJS​

In your code, import the EdexaClient and create a signer with your private key:

import { EdexaClient } from "@edexa/edexajs";

const edexaClient = new EdexaClient();
const privateKey = "your actual private key here"; // Always handle with care!
const signer = edexaClient.createWalletSigner(privateKey);

5. Deploying ERC-20 Contract​

Use the createContractERC20 function to deploy an ERC-20 contract. It returns the newly deployed contract address:

async function deployERC20Contract() {
  const erc20Arg = {
    name: "YourTokenName",
    symbol: "YTN",
    supply: 1000000, // Initial total supply
  };

  const erc20Contract = await edexaClient.createContractERC20(erc20Arg, signer);
  contractAddress = erc20Contract.address;
}

6. Interacting with the Deployed Contract​

To interact with the deployed ERC-20 contract, use the getERC20Instance function to obtain an instance. Then, use various functions like getBalance:

// pass the contractAddress that we got from previous point
const erc20 = edexaClient.getERC20Instance(contractAddress);

const address = "Address you want to find balance off";
const balance = await erc20.getBalance(address);

You can find the code sample here

Refer to the edexaJS documentation for more functions and details.