A problem about Profile Lookup

JavaScript
1

I cannot pass the test of “Profile Lookup”.

/* my code is below*/

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

Link to the challenge:

please help me to fix the bug.Thks!

3

Thanks for your advice.I passed the test according to your suggestion.