js實現googleMap中虛線的繪製方法

function drawPrePath(array,color){    var sorrow={  path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW //arrow  };  var lineSymbol = {  path: 'M 0,-1 0,1',  strokeOpacity: 1,  scale: 3  };  var pathCoord = [  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)  ];  path = new google.maps.Polyline({  path: pathCoord ,  strokeColor:"#2d2d2d",  strokeOpacity: 0,  strokeWeight: 2,  icons:[{icon:lineSymbol,offset: '0',repeat: '20px'}],  map:map  });  path.setMap(map);}

  var lineSymbol = {path: 'M 0,-1 0,1',strokeOpacity: 1,scale: 3};

關鍵在於’M 0,-1 0,1’ 其實這是SVG的繪製路徑的寫法,具體什麼意思我還解釋不清楚。嘻嘻 自己學svg教程吧！