在google map 标记位置并画路径

<!DOCTYPE html>
<html>
<head>
<script
src="http://maps.googleapis.com/maps/api/js">
</script>

<script>

  var flightPlanCoordinates = [
    new google.maps.LatLng(37.772323, -122.214897),
    new google.maps.LatLng(21.291982, -157.821856),
    new google.maps.LatLng(-18.142599, 178.431),
    new google.maps.LatLng(-27.46758, 153.027892)
  ];


function initialize() {
  var mapOptions = {
    zoom: 1,
    center: flightPlanCoordinates[1]
  };

  var map = new google.maps.Map(document.getElementById('map-canvas'),
          mapOptions);

for(var i = 0; i <flightPlanCoordinates.length; i++){
  new google.maps.Marker({
    map:map,
    draggable:true,
    animation: google.maps.Animation.DROP,
    position: flightPlanCoordinates[i]
  });
}


  var flightPath = new google.maps.Polyline({
    path: flightPlanCoordinates,
    geodesic: true,
    strokeColor: '#FF0000',
    strokeOpacity: 1.0,
    strokeWeight: 2
  });

  flightPath.setMap(map);


}

google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>

<body>
<div id="map-canvas" style="width:500px;height:380px;"></div>

</body>
</html>

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