update records

index.js

// 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));

console.log(collectionCopy);
// Only change code below this line
function updateRecords(id, prop, value) {

  if(collection[id][prop][value] == 0){
    collection = delete collection[id][prop];
    return collection
  }
  // Update collection
  else{
    collection[id][prop] = value;
    console.log(collection);
    return collection;
  }
}



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

// After 
updateRecords(5439, "tracks", "Take a Chance on Me")
// , tracks should have "Take a Chance on Me" as the last element.
// After updateRecords(2548, "artist", ""), artist should not be set
updateRecords(2548, "artist", "")
// After updateRecords(1245, "tracks", "Addicted to Love"), tracks should have "Addicted to Love" as the last element.
// After updateRecords(2468, "tracks", "Free"), tracks should have "1999" as the first element.
// After updateRecords(2548, "tracks", ""), tracks should not be set
// After updateRecords(1245, "album", "Riptide"), album should be "Riptide"