直接引入url，获得钱包地址
<html> <head> </head> <body> <div id="title">Web-client for testing get account</div> <div id="account"></div> <script src="https://cdn.jsdelivr.net/gh/ethereum/web3.js/dist/web3.min.js"></script> <script type="text/javascript"> function loadWeb3() { var Web3 = require('web3'); if (typeof web3 !== 'undefined') { web3 = new Web3(web3.currentProvider); } else { // set the provider you want from Web3.providers web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545")); } } function getAccount(callback) { let account = web3.eth.coinbase; let tag = true; if ("null" == account || null == account) { tag = false; } if(tag){ callback(account); } else { setTimeout(function(){ let text = "Try to get account again!"; document.getElementById("account").innerHTML = text; getAccount(callback); }, 1000); } } loadWeb3(); getAccount(function(account) { let text = `Account: ${account}`; document.getElementById("account").innerHTML = text; }); </script> </body> </html>在vue项目中：发现直接引入上述的js部分的时候，web3.eth.coinbase为undefined，检查发现是因为项目中安装的版本依赖的问题：package.json里面dependencies项显示了版本为1.0版本, web3.js 1.0使用如下方法：
web3.eth.getCoinbase((err, coinbase) => { console.log(coinbase) }) ;如果版本为：web3.js 0.20; 则有可能 是没有建立账户， 检查账户
web3.eth.getAccounts(console.dir)