Record Collection Problem on js

Tell us what’s happening:
Describe your issue in detail here.
I’m solving a project on objects by the name of “Record Collection” i getting my answer right if i use bracket to get object property but when i use period to get property of object it shows my answer wrong. Can u explain it WHY???

  **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 !== "tracks" && value !== "") { = value;
} else if (prop === 'tracks' && records[id].hasOwnProperty('tracks') === false){ = [value];
} else if (prop === 'tracks' && value !== "") {;
} else if (value === "") {
return records;

updateRecords(recordCollection, 5439, 'artist', 'ABBA');
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:88.0) Gecko/20100101 Firefox/88.0.

Challenge: Record Collection

Link to the challenge:

id and prop are variables, you can’t use dot notation to access object properties if the value is in a variable - you can use dot notation only with the literal property name

1 Like

Thanks Man!! Your answer cleared my doubt.

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