Tell us what’s happening:
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"
}
};
// 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" && collection[id][prop]["tracks"]){
collection[id][prop] = [];
}else if (prop ==="tracks"&& value!==""){
collection[id][prop].push(value);
}else{
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 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36
.
Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/record-collection
// running test
After updateRecords(5439, “artist”, “ABBA”), artist should be “ABBA”
Cannot read property ‘tracks’ of undefined
After updateRecords(1245, “album”, “Riptide”), album should be “Riptide”
// tests completed
this is what i see when i run this.
what am i missing?
thanks in advance.