HTML：

<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <title>标题</title>
    <script src="http://res.wx.qq.com/open/js/jweixin-1.1.0.js"></script>
    <script src="http://at.alicdn.com/t/font_kfbh2nlnqrrudi.js"></script>
    <script src="https://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js"></script>
  </head>
  <body>
    <div id="app"></div>
    <!-- built files will be auto injected -->
  </body>
</html>

JS：

mounted () {/* eslint-disable */
    this.city = remote_ip_info.city
    // console.log(remote_ip_info.province + '\n' + remote_ip_info.city)
    /* eslint-enable */
  },

如果你看懂了上面的代码，就不用往下看了

讲解：

我们远程引入全局的一个js文件(这里也可以局部引入)

https://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js

　　这个文件返回的数据如下：

var remote_ip_info = {"ret":1,"start":-1,"end":-1,"country":"\u4e2d\u56fd","province":"\u5e7f\u4e1c","city":"\u5e7f\u5dde","district":"","isp":"","type":"","desc":""};

　　参数讲解：

country：国家
province：省份
city：城市
isp：所用网络（例如电信）

好啦，你已经获取到你想要的省市区了。