Javascript Object Array find by object attribute

//Setup/*  w  w w .j  a  v  a 2s.com*/
var contacts = [
    {
        "firstName": "Akira",
        "lastName": "Laine",
        "number": "0543236543",
        "likes": ["Pizza", "Coding", "Brownie Points"]
    },
    {
        "firstName": "Harry",
        "lastName": "Potter",
        "number": "0994372684",
        "likes": ["Hogwarts", "Magic", "Hagrid"]
    },
    {
        "firstName": "Sherlock",
        "lastName": "Holmes",
        "number": "0487345643",
        "likes": ["Intriguing Cases", "Violin"]
    },
    {
        "firstName": "Kristian",
        "lastName": "Vos",
        "number": "unknown",
        "likes": ["Javascript", "Gaming", "Foxes"]
    }
];


function lookUpProfile(firstName, prop){
  var i = 0;
  console.log(prop);
  while (i < contacts.length) {
    if ((contacts[i].firstName == firstName) && (contacts[i].hasOwnProperty(prop))) {
      console.log("found");
      return contacts[i][prop];
    }
    if (!contacts[i].hasOwnProperty(prop)) {
      return ("No such property");
    }
    i += 1;
  }
  return ("No such contact");
}

// Change these values to test your function
console.log(lookUpProfile("Akira", "likes"));
console.log(lookUpProfile("Kristian", "lastName"));
console.log(lookUpProfile("Sherlock", "likes"));
console.log(lookUpProfile("Harry", "likes"));
console.log(lookUpProfile("Bob", "number"));
console.log(lookUpProfile("Akira", "address"));