Record Collection0

JavaScript
1

Tell us what’s happening:
This below test case fails, help me out. Thanks in advance.
After updateRecords(5439, "tracks", "Take a Chance on Me") , tracks should have "Take a Chance on Me" as the last element.

Your code so far

Here is my code below:


// 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"
    }
};
// Keep a copy of the collection for tests
var collectionCopy = JSON.parse(JSON.stringify(collection));

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

// Alter values below to test your code
updateRecords(5439, "artist", "ABBA");

Your browser information:

User Agent is: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:67.0) Gecko/20100101 Firefox/67.0.

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

2

You are not accounting for the case where prop === “tracks” and value is not a blank string and there is no existing prop named tracks for collection[id]. That is the case with updateRecords(5439, "tracks", "Take a Chance on Me"). The following instruction in the challenge tells you how you should deal with this special case.

If prop is "tracks" but the album doesn’t have a "tracks" property, create an empty array before adding the new value to the album’s corresponding property.

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