Record Collection Algorithm help it won't pass "Take a Chance on Me" as the last element part

Record Collection Algorithm help it won't pass "Take a Chance on Me" as the last element part
0

#1
// Setup
var collection = {
    "2548": {
      "album": "Slippery When Wet",
      "artist": "Bon Jovi",
      "tracks": [ 
        "Let It Rock", 
        "You Give Love a Bad Name" 
      ]
    },
    "2468": {
      "album": "1999",
      "artist": "Prince",
      "tracks": [ 
        "1999", 
        "Little Red Corvette" 
      ]
    },
    "1245": {
      "artist": "Robert Palmer",
      "tracks": [ ]
    },
    "5439": {
      "album": "ABBA Gold"
    }
};
// Keep a copy of the collection for tests
var collectionCopy = JSON.parse(JSON.stringify(collection));

// Only change code below this line
function updateRecords(id, prop, value) {
  
  if (prop == "tracks" && value !== "") {
    collection[id][prop].push(value);
  } else if (value !== "") {
collection[id][prop] = value;
  } else if (value === "") {
    delete collection[id][prop];
  }
  
  return collection;
}

// Alter values below to test your code
updateRecords(5439, "artist", "ABBA");

#2

I cleaned up your code.
You need to use triple backticks to post code to the forum.
See this post for details.


#3

You’re getting this error:
TypeError: Cannot read property 'push' of undefined
That’s because the object at "5439" has no tracks property. You should check if a record has a tracks property first before pushing a value.