Understanding the concept of closure in deep

Hey check this code here,

function getspinner(){  
    var count = 0;  
    function increament(){  
        return ++count;  
    }  
    function decreament(){  
        return --count;  
    }
    return {  
        up:increament,  
        down:decreament  
    }  
}

      

        
        
        
      

    

If I call him

var spinner = getspinner();  
spinner.up(); // value increments by 1 each time  
spinner.down(); // value decrements by 1 each time

      

        
        
        
      

    

But when I call it Like

getspinner().up(); // i'l get 1 each time  
getspinner().down(); // i'l get -1 each time

      

        
        
        
      

    

I would like to know the difference. why doesn't the lifetime of the account increase in the case of getspinner (). up () or getspinner (). down ();