$(document).ready(function () {
    try {
        var lng = $("#lng");
        var lat = $("#lat");
        var city = $("#city");
        var address = $("#address");
        var map = new BMap.Map("map");
        var myIcon = new BMap.Icon("https://gx.fuanmei.cn/images/position-picker2.png", new BMap.Size(60, 100), { imageOffset: new BMap.Size(0, 0) });
        var marker;
        var longitude = lng.val();
        var latitude = lat.val();
        if (longitude != "" && latitude != "") {
            
            map.centerAndZoom(new BMap.Point(longitude, latitude), 12);
            marker = new BMap.Marker(new BMap.Point(longitude, latitude),{
                icon: myIcon
            });
            map.addOverlay(marker);
        } else {
            var localcity = new BMap.LocalCity();
            localcity.get(function (e) {
                map.centerAndZoom(e.center, 12);
            });
        }
        map.addControl(new BMap.NavigationControl());
        map.enableScrollWheelZoom();

        $('#searchbtn').on('click',
            function () {

                if (city.val() == "") {
                    alert("请选择城市");
                } else {

                    var cityStr = $(city).find("option:checked").html();

                    var addressStr = address.val();
                    myGeo.getPoint(addressStr,
                        function (point) {
                            if (point) {
                                map.centerAndZoom(point, 16);
                                marker = new BMap.Marker(point);
                                map.addOverlay(marker);
                                marker.enableDragging();
                                lng.val(point.lng);
                                lat.val(point.lat);
                                marker.addEventListener("dragend",
                                    function (e) {
                                        lng.val(e.point.lng);
                                        lat.val(e.point.lat);
                                    },{
                                        icon: myIcon
                                    });
                            }
                        },
                        cityStr);
                }
            })
        var myGeo = new BMap.Geocoder();
       
        var mkrTool = new BMapLib.MarkerTool(map, {
            autoClose: true,
            icon: myIcon,
            followText: "标注您的位置"
        });
        $('#addMarker').on('click',
            function () {

                mkrTool.open();
                map.removeOverlay(marker);
                marker.dispose();
                lng.val("");
                lat.val("");

            });
        mkrTool.addEventListener("markend",
            function (e) {
                marker = e.marker;
                lng.val(e.marker.getPosition().lng);
                lat.val(e.marker.getPosition().lat);
                marker.enableDragging();
                marker.addEventListener("dragend",
                    function (e) {
                        lng.val(e.point.lng);
                        lat.val(e.point.lat);
                    });
            });
    } catch (err) {
        alert(err);
    }
});