Web3.js 教程

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前言 ​

Web3.js 是一组代码库，允许开发者通过HTTP、IPC或WebSocker 与以太坊节点交互。

环境准备 ​

Nodejs v18.16.0Web3.js 1.8.0

安装 web3@1.8.0 ​

bash
npm install web3@1.8.0

获取 web3 对象 ​

js
let Web3 = require("web3")
let web3 = new Web3(new Web3.providers.HttpProvider("HTTP://127.0.0.1:8545"))
console.log(web3)

输出 ​

这会输出节点信息

bash
Web3 {
  currentProvider: [Getter/Setter],
  _requestManager: RequestManager {
    provider: HttpProvider {
      withCredentials: false,
      timeout: 0,
      headers: undefined,
      agent: undefined,
      connected: false,
      host: 'HTTP://127.0.0.1:8545',
      httpAgent: [Agent]
    },
    ...