Create Layer on google map

There are five common google layers.

*google.maps.Marker;*google.maps.InfoWindow;*google.maps.PolyLine;*google.maps.Polygon;*google.maps.Circle;

1.Maker's properties:

　　*position:LatLng; ==> position.

　　*map: google.maps.Map; ==>this maker display on which map or use maker.setMap(map); {makert.setMap(null), which use to remove a marker from the map}

　　*title: 'string';

　　*draggable: false;

　　*animation: google.maps.Animation.DROP;google.maps.Animation.BOUNCE; / marker.setAnimation();

　　*label:'string' ==>A marker label is a single textual character that appears inside a marker;

　　*icon:image;

　　*shape:shape;

2.InfoWindow's properties: InfoWindow displays content(usually text or images) in a popup window above the map, at a given location; typically you will attach an info window to a marker, but you can also attach an info window to a specific latitude/longitude.

　　*content:'string';

　　*position:LatLng;

　　*maxWidth:number;

　　*Infowindow.close();close a info window.

　　*move an info window: call setPosition() or infoWindow.open();

3.Polyline's properties: To draw a line on your map.

　　*strokeColor: "#FFFFFF";

　　*strokeOpacity: 0.0 to 1.0;

　　*strokeWeight: number;

　　*setMap(map); //setMap(null);==>remove a polyline

　　*getPath(); ==>return polyline instance

　　*push(latlng);

　　*getLength();

　　*customize a polyline: See Symbols.

3. Polygon's properties: represents an area enclosed by a closed path.

　　*paths: triangleCoords;  var triangleCoords = [{lat: 25.774, lng: -80.190},{lat: 18.466, lng: -66.118},{lat: 32.321, lng: -64.757}];

　　*strokeColor:'#FF0000';

　　*strokeOpacity:0.8;

　　*strokeWeight: number;

　　*fillColor:'#0000FF';

　　*fillOpacity:0.35;

　　*setMap(map); //setMap(null);

　　*getPath()

 4. Circle: center, strokeColor, strokeOpacity, strokeWeight, radius, fillColor, fillOpacity, editable.

===>

google.maps.event.addListener(marker,'click', nameoffunction);

or

marker.addListener('click',nameoffunction);

==>可以在UI事件里acquire到event的parameter

marker.addListener('click',function(e){});