Basic JavaScript - Record Collection

JavaScript
1

Tell us what’s happening:
My issue is understanding this lines of code for question/guide/problem being asked to perform.

  • If prop isn’t tracks and value isn’t an empty string, assign the value to that album’s prop.

code

// If prop isn’t tracks is asked why not prop !== for the else if statement below?
// since hasOwnProperty method will return boolean and === false to execute.
// what’s the purpose of saying if prop === tracks needs exist?
// back to “isn’t” makes me think to use !==
// Thank you for your help and the trouble im having explaining my problem
else if (prop === “tracks” && value !== “” && records[id].hasOwnProperty(“tracks”) === false)
{
records[id][prop] = [value];
}

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

This isn’t related to

This code is for a completely different bullet point.

3

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