<!doctype html> <html> <head> <meta charset="utf-8"> <title>t1</title> <meta content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0" name="viewport"> </head> <body> <h1>点击获取ip</h1> <br> <button class="xxx-btn" onclick="aa()">click me</button> <script src="http://pv.sohu.com/cityjson?ie=utf-8"></script> <script> function aa() { alert(returnCitySN['cip'] + returnCitySN['cname']); console.log(returnCitySN); }; </script> </body> </html>