add_polygon_to_map

var poly = new esri.geometry.Polygon({
"rings":
[
[[117.008726, 30.931672], [117.009635, 30.930947], [117.008825, 30.930337], [117.007929, 30.931062]]
],
"spatialReference": { "wkid": 4326 }
});
var sym = new esri.symbol.SimpleFillSymbol({ "color": [255, 255, 0, 64], "outline": { "color": [255, 0, 0, 255], "width": 1.5, "type": "esriSLS", "style": "esriSLSDashDot" }, "type": "esriSFS", "style": "esriSFSSolid" });
var graphic2 = new esri.Graphic(poly, sym);
map.graphics.add(graphic2);