polygon - OpenLayers: Get Coordinates of drawn features

Can someone help in finding coordinates of drawn features? I am using this example OpenLayers website. I need to be able to export drawn objects as set of coordinates.

Posting the code from the resource, although it can be found here.

  
    
    
    
  
  

    

    

      

        
          
          Draw  
        
      
      

        

          
          Modify  
        
      
      

        Draw type  
        
          Point
          LineString
          Polygon

        
      
    
    
  

Answer

The drawn feature are added to the layer named vector. See draw interactions constructors.

// Get the array of features
var features = vector.getSource().getFeatures();


// Go through this array and get coordinates of their geometry.
features.forEach(function(feature) {
   console.log(feature.getGeometry().getCoordinates());
});