Basic JavaScript - Record Collection

JavaScript
1

Tell us what’s happening:
I can not understand the meaning of the code. What it means ? What i have to do ? What do they mean by Updating the record? explain What I have to do in this challenge.

Your code so far

// Setup
const 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 (value === '')
  {
    delete records[id][prop];
  } 
  else if (prop !== "tracks" && value !=='')
    {
      records[id][prop] = value;
    } 
    else if (prop === "tracks" && value !=='')
    {
      if (records[id].hasOwnProperty("tracks")=== false)
      {
        records[id][prop] = '';
      }

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

  return records;
}

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

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Challenge: Basic JavaScript - Record Collection

Link to the challenge:

2

You seem to have just about figured it out… assuming that’s your code?
You’re trying to push values to a non-existent array though, which is why one of your tests is failing.

1 Like
3

So What Should I do?

4

If there is no array and you need there to be an array, you’ll need to create an array (instead of a string).

You wrote the rest of the code yourself right? What don’t you understand about the code?

1 Like
5

Yes , I Cannot Understand what i have to do with Value ? Whare should i assign it if Property is diffrent . So i deleted the value in first if statement then checked the Prop is tracks , if it is the value wil be assigned And if it’s not the value wont be assigned and Whare should I create That Array?

6

Explain Me with Code Please and thank you

7

I’m confused how you have successfully filled in the rest of the function if you don’t understand what you are doing?

If the property is ‘tracks’ and you have a value to insert into it but there is no ‘tracks’ property in the object, why are you creating an empty string?

1 Like
8

oh Its Dumb Mistake Of Mine Thank You Brother!

9

Actually If you can please Explain What I have to Do in the Problem, Because the Code given here By Me its Copied For Reference, I Didn’t Code it Sorry :sweat_smile: