小编Hyp*_*per的帖子

我需要在地图中获取多边形的区域.我找了一个例子new google.maps.geometry.spherical.computeArea,但我不能让它工作,我不知道为什么.

function dibuV(area){
  var i;
  var a = new Array();
  for(i=0; i<area.length; i++){
    var uno = area[i].split(",");
    a[i] = new google.maps.LatLng(uno[0],uno[1]);
  }
  poligon = new google.maps.Polygon({
    paths: a,
    strokeColor: "#22B14C",
    strokeOpacity: 0.8,
    strokeWeight: 2,
    fillColor: "#22B14C",  
    fillOpacity: 0.35  
  })  
  poligon.setMap(map);//until here is ok 
  var z = new google.maps.geometry.spherical.computeArea(poligon.getPath());
  alert(z); //this is not working
}