$(document).ready(function(){   
            //JS SDK 只适合于支持JSONP格式的聚合数据接口 
            //JS SDK 调用数据会使您的APPKEY处于暴露状态，请慎用 
            var appkey = ''; var url = 'http://apis.juhe.cn/ip/ip2addr';  
            $.getJSON(url+"?callback=?", {     
                        "ip" : 'www.juhe.cn',     
                        "dtype" : "jsonp",    
                        "key" : "xxxxxxxxxx" 
             }, function(data) {     
                         var errorcode = data.error_code;       
                         if( errorcode ==0){         
                                //数据正常返回            
                                var address = data.result.area +" "+ data.result.location;            
                                alert(address);     
                                }else{          
                                alert(errorcode+":"+data.reason);       
                                }   
              }); 
})