I keep getting tracks is not defined

Tell us what’s happening:

here is my soloution, i keep getting track is not defined

function updateRecords(object, id, prop, value) {

   if (value === "") {

        delete object[id][prop];

    }

    else if (prop === tracks) {

       object[id][prop] = object[id][prop] || [];

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

        }else{

            object[id][prop]= value;

        }

    

  return object;

}

Your code so far


// Setup
var collection = {
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
//collection = JSON.parse(JSON.stringify(collection));
function updateRecords(object, id, prop, value) {
 if (value === "") {
      delete object[id][prop];
  }
  else if (prop === tracks) {
     object[id][prop] = object[id][prop] || [];
          object[id][prop].push(value);

      }else{
          object[id][prop]= value;
      }
  
return object;
}

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

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36.

Challenge: Record Collection

Link to the challenge:

You need to wrap tracks in quotes.

This line:

else if (prop === tracks) {

The prop is coming in as a string. So you need:

else if (prop === 'tracks') {

Without the quotes, JS assumes that it is a variable but it has no idea what it is.

1 Like