var array = [1, 2, 3, 4, 5, 6],  
    s = 0,  
    p = 1,  
    i;  
for (i = 0; i < array.length; i += 1)   
   {  
    s += array[i];  
    p *= array[i];  
    }  
console.log('Sum : '+s + ' Product :  ' +p);   