Function return error message doesn't work

Question

I've actually a little problem : I want make a function which loop in a object in array.

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){
    for (var i = 0; i < contacts.length; i++) {
        for (var prop1 in contacts[i]) {
            if (contacts[i][prop1] == firstName) {
                if (contacts[i].hasOwnProperty(prop)) {
                    return contacts[i][prop];
                }
            }
         }
     }
 }

 lookUpProfile("Sherlock", "likes");

And I want return two error : "No such contact" and "No such category" (I commentated the part where I placed the "return 'No such contact'" but it's dosen't work...).

Hi! So just to be sure, you want lookUpProfile to return the first contact that matches? Or, in this particular example, return "No such contact"? — nibnut
– nibnut, Commented Mar 2, 2017 at 21:30
"Doesn't work" is not a useful problem description. What's the current issue with your code? — Felix Kling
– Felix Kling, Commented Mar 2, 2017 at 21:33

matt · Accepted Answer · 2017-03-02 21:51:03Z

1

Try this code:

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 contact = contacts.find(function(contact) {
    return contact.firstName === firstName;
  });

  if (!contact) {
    return 'No such contact';
  }

  if (!contact.hasOwnProperty(prop)) {
    return 'No such category';
  }

  return contact[prop];
}



console.log(lookUpProfile("Sherlock", "likes"));

edited Mar 2, 2017 at 21:51

matt

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answered Mar 2, 2017 at 21:33

Ihor Skliar

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