无法检索MetaMask帐户的以太坊余额

Question

const showAccount = document.querySelector('.showAccount');  
const showBalance = document.querySelector('.showBalance');  
const Web3 = require("web3");  
getAccount();  
getBalance();  

getAccount返回钱包id

async function getAccount() {  
const accounts = await ethereum.request({ method: 'eth_requestAccounts' });  
const account = accounts[0];  
showAccount.innerHTML = account;  
}  

getBalance返回undefined，而不是Metamask 中的以太币数量

async function getBalance() {  
const accounts = await ethereum.request({ method: 'eth_requestAccounts' });  
const account = accounts[0];  
showBalance.innerHTML = account.balance;  
}  

也许有人知道一个好的API，可以检索比这两个示例更多的值，或者有一个很好的视频可以学习。

我找到了我的accounts对象的属性：这里是

Answer 1

我自定义了你的代码，现在它显示了账户中的以太币金额：

const showAccount = document.querySelector('.showAccount');
const showBalance = document.querySelector('.showBalance');
getAccount();
loadBalance();

async function getAccount() {
const accounts = await ethereum.request({ method: 'eth_requestAccounts' });
const account = accounts[0];
showAccount.innerHTML = account;
}
function loadBalance(){
web3Provider = null;
contracts = {};
account = '0x0';
const Web3 = require("web3");
const ethEnabled = async () => {
if (window.ethereum) {
await window.ethereum.send('eth_requestAccounts');
window.web3 = new Web3(window.ethereum);
return true;
}
}
if (typeof web3 !== 'undefined') {
// If a web3 instance is already provided by Meta Mask.
web3Provider = web3.currentProvider;
web3 = new Web3(web3.currentProvider);
} else {
// Specify default instance if no web3 instance provided
web3Provider = new Web3.providers.HttpProvider('http://localhost:7545');
web3 = new Web3(App.web3Provider);
}
$.getJSON("Market.json", function (market) {
console.log("initializing Market contract")
// Instantiate a new truffle contract from the artifact
contracts.Market = TruffleContract(market);
// Connect provider to interact with contract
contracts.Market.setProvider(web3Provider);
});
$.getJSON("Users.json", function (users) {
console.log("initializing User contract")
// Instantiate a new truffle contract from the artifact
contracts.Users = TruffleContract(users);
// Connect provider to interact with contract
contracts.Users.setProvider(App.web3Provider);
});
var marketInstance;
var userInstance;
var loader = $("#loader");
var content = $("#content");
//loader.show();
content.show();
// Load account data
console.log("loading account data")
var currentAccount;
web3.eth.getCoinbase(function (err, account) {
if (err === null) {
console.log("Your Account: " + account)
account = account;
currentAccount = account;
web3.eth.getBalance(account, function(err, balance) {
if (err === null) {  //Note:set id="accountBalance" in your html page
$("#accountBalance").text(web3.fromWei(balance, "ether") + " ETH");
}
});
}
});
}