從react-web3-provider訪問web3 prop

Question

我在遵循[react-web3-provider] [1]的基本功能時遇到了麻煩

我像這樣圍繞組件的根：

 import React, { Component } from "react" import { withWeb3 } from 'react-web3-provider'; import Web3 from 'web3'; import Web3Provider from 'react-web3-provider'; class App extends Component { render() { return ( < Web3Provider defaultProvider = { (cb) => cb(new Web3(new Web3.providers.HttpProvider("https://mainnet.infura.io/YOUR_API_KEY"))) } loading = "Loading..." error = { (err) => `Connection error: ${err.message}` } > <div className = "App" > <NavBar / > </div> </ Web3Provider > ) } } export const NavBar = props => { const { web3 } = props return ( <nav> <ul> <li> {" "} <Link> Partial f </Link>{" "} </li> <li> {" "} <Text.span> Wallet Address: {web3.eth.wallet[0]} </Text.span>{" "} </li> </ul> </nav> ) } export default withWeb3(NavBar) 

 <script src="https://github.com/ethereum/web3.js/blob/develop/lib/web3.js"></script> <script src="https://github.com/hussy-io/react-web3-provider/blob/master/src/index.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script> 

但是，我不確定應該如何從props獲取web3 ，因為按照他們的文檔，沒有任何props從父組件傳遞到子組件。

如何獲取web3的實例， web3 ：

 class MyComponent {
    render() {
        const { web3 } = this.props;
....

Answer 1

文檔中有withWeb3 HOC

import { withWeb3 } from 'react-web3-provider';

class MyComponent {
    render() {
        const { web3 } = this.props;

    }
}

export default withWeb3(MyComponent);