javascript - How to draw a polygon on google map (V3) and save it? -


this question has answer here:

i use google map in project , customize create , drawing polygon , poly-line don't save shapes, , want create polygon on map , save in database, question : how save polygon coords in database?

my code: 

  function initialize() {          var mapoptions = {             zoom: 14,             minzoom: 14,             maxzoom: 19,             center: new google.maps.latlng(35.696282, 51.422946),             maptypeid: google.maps.maptypeid.roadmap,             maptypecontrol: true,             scalecontrol: true,             streetviewcontrol: false                         };          map = new google.maps.map(document.getelementbyid('map-canvas'), mapoptions);            drawingmanager = new google.maps.drawing.drawingmanager({             drawingmode: google.maps.drawing.overlaytype.polygon,             drawingcontrol: true,             drawingcontroloptions: {                 position: google.maps.controlposition.top_center,                 drawingmodes: [/*google.maps.drawing.overlaytype.circle, google.maps.drawing.overlaytype.rectangle, */google.maps.drawing.overlaytype.polyline, google.maps.drawing.overlaytype.polygon]             },             polygonoptions: {                 editable: true             }         });         drawingmanager.setmap(map);          google.maps.event.addlistener(drawingmanager, "overlaycomplete", function (event) {             if (event.type != google.maps.drawing.overlaytype.marker) {                                     drawingmanager.setdrawingmode(null);                 var newshape = event.overlay;                 newshape.type = event.type;                 google.maps.event.addlistener(newshape, 'click', function () {                     setselection(newshape);                 });                  setselection(newshape);             }         });                     google.maps.event.addlistener(drawingmanager, 'drawingmode_changed', clearselection);         google.maps.event.addlistener(map, 'click', clearselection);         //delete selected shape         google.maps.event.adddomlistener(document.getelementbyid('deleteshape'), 'click', deleteselectedshape);

}

var len = shape.getpath().getlength();         var htmlstr = "";         (var = 0; < len; i++) {             console.log(shape.getpath().getat(i).tourlvalue(7));         }

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