node.jsblockchainmetamasketherethers.js

how to connect metamask with ethers.js and fetch balance?

i have been trying to connect metamask and ethers.js to fetch my current wallet balance



const provider = new ethers.providers.Web3Provider(window.ethereum)
const signer = provider.getSigner()
balance =  provider.getBalance("0x7C76C63DB86bfB5437f7426F4C37b15098Bb81da")

when i try this i am getting a error

ReferenceError: window is not defined

Anyone has idea how to do this?

Solution

  • You need to run this code on a web application running on localhost or on a server. And, of course, you need to have MetaMask installed on your browser.

    Put this code on a script section of your site:

    await window.ethereum.request({method: 'eth_requestAccounts'});
const provider = new ethers.providers.Web3Provider(window.ethereum);
const contract = new ethers.Contract(smartContractAddress, abi, provider);
balance = await contract.getBalance("0x7C76C63DB86bfB5437f7426F4C37b15098Bb81da");