javascript中利用地图API实现定位

话不多说，直接上代码

<pre>//         百度地图API功能
var geolocation = new BMap.Geolocation();
geolocation.getCurrentPosition(function(r){
    if(this.getStatus() == BMAP_STATUS_SUCCESS){
        var geoc = new BMap.Geocoder();
        var pt = r.point;
        geoc.getLocation(pt, function(rs){
            var addComp = rs.addressComponents;
            // alert(addComp.province + ", " + addComp.city + ", " + addComp.district + ", " + addComp.street + ", " + addComp.streetNumber);
            $city =$(".location");
//                    var city_name = $.fn.cookie('location_city');
            var city_name = Cookies.get('location_city');
 
            if (city_name == addComp.city){
                // TODO 定位城市和cookie值一致, 则不操作
                $city.text(addComp.city);
            } else {
                $city.text(city_name);
                if (confirm('当前位置和定位城市不一致, 是否更改成当前位置?')) {
                    $city.text(addComp.city);
//                            $.fn.cookie('location_city', addComp.city);
//                            Cookies.set('location_city', addComp.city);
                    setLocation();
                }
            }
 
        });
    }
    else {
        alert('定位失败');
    }
 
 
},{enableHighAccuracy: true});
 
function setLocation(){
    var currount_location = $(".location").text();
    Cookies.set('location_city', currount_location);
}</pre>