html5页面设置获取session的方法

 var currentLon;

   var currentLat;

   currentLat = sessionStorage.getItem("currentLat");

   currentLon = sessionStorage.getItem("currentLon");

   if (currentLon == null || currentLon == undefined || currentLon == '') {

        var geolocation = new BMap.Geolocation();   

        geolocation.getCurrentPosition(function (r) {   

            if (this.getStatus() == BMAP_STATUS_SUCCESS) {   

                var mk = new BMap.Marker(r.point);   

                currentLat = r.point.lat;   

                currentLon = r.point.lng;

                sessionStorage.setItem("currentLat", currentLat);

                sessionStorage.setItem("currentLon",currentLon);

                     var url = 'getRecentCopartner.do?longitude='+currentLon+'&latitude='+currentLat+'&page=';

                     $('#recentctgs').more({

                           'address' : url

                     });

            }  

        });

   }else{

        var url = 'getRecentCopartner.do?longitude='+currentLon+'&latitude='+currentLat+'&page=';

           $('#recentctgs').more({

                'address' : url

           });

   }