Question about Record Collection challange

JavaScript
1

Tell us what’s happening:
Describe your issue in detail here.
Why do I have to add square brackets to make this code work? (eg: records[id][prop] = [value]; at below)
If I take square brackets away, it cannot fulfill the " After updateRecords(recordCollection, 5439, "tracks", "Take a Chance on Me") , tracks should have the string Take a Chance on Me as the last element." requirement.

Why?

// 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 !== 'tracks' && value !== "") {

    records[id][prop] = value;

  } else if (prop === "tracks" && records[id].hasOwnProperty("tracks") === false) {

    records[id][prop] = **[value];**

  } else if (prop === "tracks" && value !== "") {

    records[id][prop].push(value);

  } else if (value === "") {

    delete records[id][prop];

  }

  return records;

}

updateRecords(recordCollection, 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/90.0.4430.93 Safari/537.36.

Challenge: Record Collection

Link to the challenge:

2

the tracks property should always be an array, if you write

records[id][prop] = value

then that means that the tracks property is not an array, and so the test fail

3

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