profile.js

 var result;
  
  for ( var i = 0 ; i < contacts.length; i++){
    
    if(contacts[i].hasOwnProperty(firstName)){
     
      if(contacts[i].hasOwnProperty(prop)){
        
        result = contacts[i].prop;
        
      }else{
        result = "No such property";
      }
      
    }else{
      result = "No such contact";
    }
    
       
  
  }
  
  return result;