Update Record Collection

JavaScript
1

Tell us what’s happening:
Describe your issue in detail here.
I have been stuck on this problem for a while now. Not exactly sure where I went wrong with the code.

  **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!==""){
  records[id][prop]=value;
}
else if (prop=="tracks" && records[id].hasOwnProperty("tracks")==false){
  tracks=[];
  tracks.push(value);
}
else if (prop=="tracks" && value==""){
  records[id][tracks].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/91.0.4472.106 Safari/537.36

Challenge: Record Collection

Link to the challenge:

2

what’s tracks? you can’t use a variable without defining it, that errors out and stop code execution

3

In the first line, I create an empty array called tracks and add a value to it.

In the second line I edited the code to add a value to an existing album track array

else if (prop=="tracks" && value==""){
    records[id][prop].push(value);
  }

However, this is still not working.

4

Hi Lizaste,

Do you mean this line?

tracks=[];

The tracks array should be inside the record. Your line is creating a (global) variable in the function. Can you reach the solution with this tip?

5

the “tracks” is already defined within the object, you can remove it. And you have to access the records to add the “tracks” like this - records[id][prop]. hope that helps

6

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