Delete empty prop

JavaScript
1

Tell us what’s happening:
'This solution does not delete empty property? why is that?

Your code so far


// Setup
var collection = {
2548: {
  album: "Slippery When Wet",
  artist: "Bon Jovi",
  tracks: [
    "Let It Rock",
    "You Give Love a Bad Name"
  ]
},
2468: {
  album: "1999",
  artist: "Prince",
  tracks: [
    "1999",
    "Little Red Corvette"
  ]
},
1245: {
  artist: "Robert Palmer",
  tracks: [ ]
},
5439: {
  album: "ABBA Gold"
}
};

// Only change code below this line
function updateRecords(id, prop, value) {
if (value == "") {
  delete collection[id][prop];
} else if (prop == "tracks") {
  collection[id][prop] = collection[id][prop] || [];
  collection[id][prop].push(value);
} else {
  collection[id][prop] = value;
}

return collection;
}

console.log(collection[1245]);
// Alter values below to test your code
updateRecords(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/78.0.3904.97 Safari/537.36.

Challenge: Record Collection

Link to the challenge:
https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-javascript/record-collection

2

Your code passed for me.
What errors are you getting?

3

this code should delete an empty property like in task, but it don’t.
try this:
console.log(collection[1245]);
the result show an empty property in this array

4

Console.log only shows the content not makes any change in the collection.

To remove tracks for 1245 item you must write

updateRecords(1245, ”tracks”, ””);

Then you can see the result with console.log(collection[1245]);

1 Like