javascript - 获取谷歌地图中已创建标记的位置(纬度，经度)

Question

这里我有一个函数route();该函数在两个地点之间创建一个方向，并从 startPoint 和 endPoint 创建两个标记。一切都很好，但是我在这里如何编写一个函数，该函数将从起点返回 lat,lng ，从终点返回 lat,lng ，而无需在此处使用地理编码，因为在此函数中已经创建了标记

函数路线();代码:

function route() {
  // Clear any previous route boxes from the map
  clearBoxes();

  // Convert the distance to box around the route from miles to km
  distance = parseFloat(document.getElementById("distance").value) * 1.609344;

  var request = {
    origin: document.getElementById("from").value,
    destination: document.getElementById("to").value,
    travelMode: google.maps.DirectionsTravelMode.DRIVING
  }

  // Make the directions request
  directionService.route(request, function(result, status) {
    if (status == google.maps.DirectionsStatus.OK) {
      directionsRenderer.setDirections(result);

      // Box around the overview path of the first route
      var path = result.routes[0].overview_path;
      var boxes = routeBoxer.box(path, distance);
      // alert(boxes.length);
      drawBoxes(boxes);
      findPlaces(boxes,0);
    } else {
      alert("Directions query failed: " + status);
    }
  });
}

所以我需要一些变量等。 var startPoint = [lat,lng]; var endPoint = [lat,lng] 到达这里，因为我不想再次使用地理编码请求，因为这里是标记及其坐标位置已经创建...

我想获取两个标记的位置以及如何做到这一点？

Answer 1

从 DirectionsResult 中解析出位置

if (status == google.maps.DirectionsStatus.OK) {
  directionsRenderer.setDirections(result);
  var route = response.routes[0];
  startLocation = new Object();
  endLocation = new Object();

  var path = response.routes[0].overview_path;
  var legs = response.routes[0].legs;
  for (i=0;i<legs.length;i++) {
    if (i == 0) { 
      startLocation.latlng = legs[i].start_location;
      startLocation.address = legs[i].start_address;
    }
    endLocation.latlng = legs[i].end_location;
    endLocation.address = legs[i].end_address;
  }
  // ... rest of your code to display the route ...

working example that does that (and renders the polyline and creates markers)