JavaScript: Record Collection

Tell us what’s happening:

don’t work

Your code so far
function updateRecords(object,id, prop, value) {
if (value === ‘’) {
delete collection[object][id][prop];
} else if(prop == ‘tracks’) {
collection[object][id][prop] = collection[object][id][prop] || ;
else {
collection[object][id][prop]= value;
return object;
updateRecords(5439, “artist”, “ABBA”);
updateRecords(5439, “tracks”, “Take a Chance on Me”);
updateRecords(2548, “artist”, “”);
updateRecords(1245, “tracks”, “Addicted to Love”);
updateRecords(2468, “tracks”, “Free”);
updateRecords(2548, “tracks”, “”);
updateRecords(1245, “albumTitle”, “Riptide”);

console.log(updateRecords(5439, “artist”, “ABBA”));
console.log(updateRecords(5439, “tracks”, “Take a Chance on Me”));

// Setup
var collection = {
2548: {
  albumTitle: 'Slippery When Wet',
  artist: 'Bon Jovi',
  tracks: ['Let It Rock', 'You Give Love a Bad Name']
2468: {
  albumTitle: '1999',
  artist: 'Prince',
  tracks: ['1999', 'Little Red Corvette']
1245: {
  artist: 'Robert Palmer',
  tracks: []
5439: {
  albumTitle: 'ABBA Gold'

// Only change code below this line
function updateRecords(object, id, prop, value) {
return object;

updateRecords(collection, 5439, 'artist', 'ABBA');

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36.

Challenge: Record Collection

Link to the challenge:

When collection is passed in as the first argument to the function, it is object. You shouldn’t be referencing collection anywhere inside your function.

1 Like

Thanks you @camperextraordinaire