TypeError：无法读取未定义的属性（读取“合同”）

Question

TypeError: Cannot read properties of undefined (reading 'Contract')

模块。

彩票反应/src/lottery.js:9

我在服务并转到浏览器时收到此错误

我的代码

import web3 from "web3";

const address = '0x------------------------------';


const abi = [{"constant":true,"inputs":[],"name":"manager","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"pickWinner","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"getPlayers","outputs":[{"name":"","type":"address[]"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"enter","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"players","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"}];


function test () {
    console.log(web3.eth); // throws undefined 
};

export default test; 

Answer 1

web3.eth 未定义。先尝试修复它。

Answer 2

我做了一个小改动来修复它

更新web3.eth

致new web3().eth