// this is to get coordinate(lat and lng) of a map, lats and lng are being stored in array named coordinate

var coordinate = [];

for (var i = 0; i < polygon.getPath().getLength(); i++) {
    coordinate  += polygon.getPath().getAt(i).toUrlValue(6) + ",";
}

var results =coordinate.filter(function(value) {
    return(value< 0);
}
);

alert(coordinate);
})