大家好，这段代码的作用如下所述。
下面有一些预定义的函数，即 getMapOption 和其他
function initialize(){
var divCalcDis = $('divCalcDis');
var pdist = $('pdist');
var pTimeTaken = $('pTimeTaken');
var txtLatLon = $('divLatLon');
var lblDistance = $('lblDistance');
var mapOption = mapHandler.getMapOption(that.LonLatCoordinates[0], 15, "Default");
map = mapHandler.getMap('map_canvas', mapOption);
var renderOption = { draggable: true };
directionsDisplay = new google.maps.DirectionsRenderer(renderOption);
directionsDisplay.setMap(map);
google.maps.event.addListener(directionsDisplay, 'directions_changed', function () { for (i = 0; i < directionsDisplay.directions.routes.length; i++) {
//getting latlon
txtLatLon.innerHTML = "";
console.log(directionsDisplay.directions.routes[i].overview_path.length);
var latLng = directionsDisplay.directions.routes[i].overview_path[k];
var latLng = directionsDisplay.directions.routes[i].overview_path[directionsDisplay.directions.routes[i].overview_path.length - 1].toString();
latLng = latLng.split('(')[1];
latLng = latLng.split(')')[0];
latLng = latLng.split(' ');
latLng = latLng[0] + latLng[1];
txtLatLon.innerHTML += latLng;
}
});
startMap();
}
function startMap() {
var i=0;
google.maps.event.addListener(map, 'click', function (event) {
i++;
if(i === 1){
mapHandler.setMarker(event.latLng, map, "http://www.google.com/intl/en_us/mapfiles/ms/micons/green-dot.png", null, null, null, that.permanentMarkers, false);
that.origin = event.latLng; //comma seperated values of lat,lon
}
else if(i > 1){
mapHandler.setMarker(event.latLng, map, "http://www.google.com/intl/en_us/mapfiles/ms/micons/green-dot.png", null, null, null, that.permanentMarkers, false);
if (i === 2) {
that.dest = event.latLng; //comma seperated values of lat,lon
}
else if (i > 2) {
that.wayPTs.push({
location: that.dest,
stopover: true
});
that.dest = event.latLng;
}
that.calcRoute();
}});
};
function calcRoute() {
var divCalcDis = stringHandler._id('divCalcDis');
var pdist = stringHandler._id('pdist');
var pTimeTaken = stringHandler._id('pTimeTaken');
var txtLatLon = stringHandler._id('divLatLon');
txtLatLon.innerHTML = "";
if (!that.wayPTs.length > 1) {
this.wayPTs = null;
}
var request = this.directionsRequest(this.origin,this.dest,google.maps.DirectionsTravelMode.DRIVING,this.wayPTs,false,true,true,google.maps.DirectionsUnitSystem.METRIC);
that.directionsResponse.route(request, function (response, status) {
//console.log(response);
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
}
});
};
** 我正在使用 Google Maps API V3 Directions 库制作一个项目，当用户单击地图上的某个地方时，我正在其中创建一条路线
这是一个屏幕截图
**
现在，当我拖动方向绘制的线时，它工作顺利，并正确地给了我纬度和经度。
这是一个截图
但是问题是，当我单击地图上的任何其他位置（拖动后）时，航路点会刷新，并且我会在下一站获得旧的无拖动路线，如下所示
这是一个屏幕截图
如何保存航路点的纬度，以便在创建新点后可用
Thx