Profile Lookup without using hasOwnProperty()

JavaScript
1

Hi,

I’m trying to solve the profile lookup problem without using the hasOwnProperty() method. I came up with this code but I don’t understand why it’s not working properly. Can anyone enlighten me as to why?

var i = 0;
  while (i < contacts.length) {
    
    
    if (((firstName == contacts[i].firstName) == true) && (contacts[i][prop] == false)) {
      return "No such property";
    }
    else if (firstName == contacts[i].firstName) {
      return contacts[i][prop];
    }
    i++;
  }
  return "No such contact";

Thanks!