Teaching Object CRUD Operations to Students*

ObjectSolution.js

// 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!==""){
    var obj = collection[id] 
    obj[prop] = value
    
  }
  else if (prop=="tracks" && 
  collection[id].tracks !== undefined && value !==""){
    collection[id].tracks.push(value);
  
  }
  else if (collection[id].tracks == undefined && prop == "tracks" && value !==""){
    var obj = collection[id]
     obj[prop] = [];
     obj.tracks.push(value);
    
  }else{
    var obj = collection[id]
    delete obj[prop]
  
  }
  
   return collection;
}

updateRecords(2548, "tracks", "")