Record Collection Challenge help!

Tell us what’s happening:
Describe your issue in detail here.

trying to solve the second problem

  • If prop is tracks but the album doesn’t have a tracks property, create an empty array and add value to it.

and here is my current code for it
else if (prop === “tracks” && !records[id].hasOwnProperty(“tracks”))

can anyone give me any hints or suggestions in the right direction? thanks

Your code so far

// Setup
var recordCollection = {
 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(records, id, prop, value) {

 //If prop isn't tracks and value isn't an empty string, update or set that album's prop to value.

 if (prop !== "tracks" && value !== "") {
   records[id][prop] = value;

//If prop is tracks but the album doesn't have a tracks property, create an empty array and add value to it.

 } else if (prop === "tracks" && !records[id].hasOwnProperty("tracks")) {
//If prop is tracks and value isn't an empty string, add value to the end of the album's existing tracks array.
 } else if (prop === "tracks" && value !== "") {

//If value is an empty string, delete the given prop property from the album.
 } else if (value === "") {
   delete records[id][prop];
 return records;

updateRecords(recordCollection, 5439, 'artist', 'ABBA');
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Challenge: Record Collection

Link to the challenge:

Your else if statement looks good. Now add some code to the block.

Here’s an empty array


Here’s how you assign an empty array to a variable

someVariable = [];

Here’s how you add a value to an array

const someArray = [];
const someValue = "foo";
someArray.push(someValue); // someArray is ["foo"]

solved it!

else if (prop === “tracks” && !records[id].hasOwnProperty(“tracks”)) {

records[id][prop] = [];


I think what threw me off was that it said to create an empty array and add value to it.
If I just create an empty array and push value to it, it wouldn’t really make sense so
I made an empty array with the properties records[id][prop] and pushed value to it.

Can anyone comment if my thought process was correct here?

1 Like

Yep, that is what you’re intended to do. Good work figuring it out!

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