<!DOCTYPE html>
<html lang="en">
<head>
   <meta charset="UTF-8" />
   <title>Document</title>
   <style type="text/css">
    .btn{width:100px;}
   </style>
</head>
<body>
   <h1>获取本地ip地址方法</h1>
   <br>
   <button class="btn" onclick="getIp()">点击获取ip</button>
   <script src="http://pv.sohu.com/cityjson?ie=utf-8"></script>
   <script>
      function getIp() {
  console.log(returnCitySN);

alert(returnCitySN['cip'] + returnCitySN['cname']);
      };
   </script>
</body>
</html>
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