1. 打开index.html
<!-- 引入JS -->
<script src="/cityjson?ie=utf-8"></script>
2. 获取IP
let IP =returnCitySN["cip"]；
localStorage.setItem('ip',IP);
完整代码：
<!DOCTYPE html><html lang="zh-CN"><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><title><%= htmlWebpackPlugin.options.title %></title>...省略其他代码<!-- 关键点1:引入JS --><script src="/cityjson?ie=utf-8"></script></head><body><noscript><strong>Please enable JavaScript to continue.</strong></noscript><div id="app"></div><!-- built files will be auto injected --><script> //这里是关键点2: 获取用户真实IP地址（外网ip） 并存储在本地// document.write(returnCitySN["cip"]+','+returnCitySN["cname"]) localStorage.setItem('ip',returnCitySN["cip"])</script></body></html>
