我只想写一个简单的脚本来获取这笔交易的以太坊交易数据。由于某些原因，下面的脚本不能工作。https://rinkeby.etherscan.io/tx/0xd8b3c50230fb2f1d3d8586f5179b514e913dbe7868effd490a5743caaabda6b9
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/web3@latest/dist/web3.min.js"></script>
<script>
//import Web3 from 'web3';
async function getData(){
//var Web3 = require('web3');
var web3 = new Web3(new Web3.providers.HttpProvider('https://rinkeby.etherscan.io/tx/'));
var trans = await web3.eth.getTransaction('0xd8b3c50230fb2f1d3d8586f5179b514e913dbe7868effd490a5743caaabda6b9');
console.log(trans);
}
</script>
</head>
<body>
<input type="button" value="GetData" id="myCheck" onclick="getData()">
</body>
</html>
然而，这是我收到的错误。如有任何帮助，不胜感激。
Uncaught (in promise) Error: Invalid JSON RPC response: "n<!doctype html>n<html lang="en">n<title>Etherscan Error Page</title>n<head>n<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">n<meta name="Description" content="The Ethereum BlockChain Explorer, API and Analytics Platform">n<meta name="author" content="etherscan.io">n<meta name="keywords" content="ethereum, explorer, ether, search, blockchain, crypto, currency">n<meta name="format-detection" content="telephone=no">n<link rel="shortcut icon" href='/images/favicon2.ico'>n<link rel="stylesheet" href="/assets/vendor/font-awesome/css/fontawesome-all.min.css?v=22.6.2.0">n<link rel="stylesheet" href="/assets/css/theme.min.css?v=22.6.2.0">n<script async src='/cdn-cgi/challenge-platform/h/g/scripts/invisible.js?ts=1655136000'></script></head>n<body>n<header id="header" class="u-header">n<div class="u-header__section">n<div id="logoAndNav" class="container">n<nav class="js-mega-menu navbar navbar-expand-md u-header__navbar u-header__navbar--no-space 1d-block">n<div>n<a class="navbar-brand" href="/" target="_parent" aria-label="Etherscan">n<img width="160" src="/assets/svg/logos/logo-etherscan.svg?v=0.0.2" alt="Etherscan Logo">n</a>n</div>n</nav>n</div>n</div>n</header>n<main id="content" class="bg-img-hero-center" style="background-image: url(images/error-404.svg);" role="main">n<div class="container d-lg-flex align-items-lg-center min-height-100vh">n<div class="w-lg-60 w-xl-50">n<div class="mb-5">n<h1 class="text-secondary font-weight-normal"><span class="font-weight-semi-bold mr-2">Sorry!</span>We encountered an unexpected error.</h1>n<p class="mb-0 ">An unexpected error occurred. <br />Please check back later</p>n</div>n<a class="btn btn-primary btn-wide transition-3d-hover" href="/">Back Home</a>n</div>n</div>n</main>n<script type="text/javascript">(function(){window['__CF$cv$params']={r:'71ac69d69dcdfb94',m:'kRT6PH.JaKfrrlNZDA8qUZQoLnuIL6WDEgb7vf.ju1A-1655139951-0-AdSH8wUwnN4/UDWZCb6E7p+JnSImKLhp0vn7pFWiMh/CJQRo6bgtRW4xr8hxx2r4SHQGEzuIp2dTAFdWxZlqX8gFGYUW/Zg+ey3+Cc6eoR6QkzHvMTz+XSNZiG5rSZkClA==',s:[0xfeec06b72f,0x45e731b888],u:'/cdn-cgi/challenge-platform/h/g'}})();</script></body>n</html>n"
at Object.InvalidResponse (errors.js:43:16)
at i.onreadystatechange (index.js:95:32)
根据这里的指导找到了答案。
const ethNetwork = 'https://rinkeby.infura.io/v3/<Infura Project ID>'; //get this from your infura dashboard
const web3 = new Web3(new Web3.providers.HttpProvider(ethNetwork));
// let's fetch the transaction value
var trans = await web3.eth.getTransaction('0xd8b3c50230fb2f1d3d8586f5179b514e913dbe7868effd490a5743caaabda6b9');
console.log(trans)
var input = web3.utils.toAscii(trans.input)
console.log(input)
https://rinkeby.etherscan.io/tx/不是有效的提供者。它是一个区块链浏览器——一个以人类可读的形式显示区块链数据的服务，但它没有发布web3js期望的JSON-RPC API。
您需要连接到JSON-RPC节点提供程序。第三方如Alchemy和Infura，或者你自己的节点。
示例代码:
var web3 = new Web3(new Web3.providers.HttpProvider('https://mainnet.infura.io/v3/<your_api_key>'));