window.web3移除使用window.ethereum替代

检测MetaMask以太坊提供商，或任何注入window.ethereum的提供商。

import detectEthereumProvider from '@metamask/detect-provider'

import Web3 from 'web3';

const provider = detectEthereumProvider();

let web3;

if (provider) {

console.log('Ethereum successfully detected!')

web3=new Web3(window.ethereum) ;

} else {

// if the provider is not detected, detectEthereumProvider resolves to null

console.error('Please install MetaMask!')

}

export default web3;

使用

let accounts=await web3.eth.getAccounts(function (error, result) {

      console.log(result);

    });