Tell us what’s happening:
Hi! When I reached the test ‘Record collection’ in the JavaScript certification, after several attempts, I passed the test. But when I run it on VS Code to test it on Google Chrome I get the following error: Uncaught TypeError: Cannot set property ‘undefined’ of undefined.
I was googling and reading about one of the top-most JS errors, but i can’t realize why isn’t this working. Thanks!
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") {
if(!collection[id]["tracks"]) {
collection[id][prop] = [];
}
collection[id].tracks.push(value);
} else {
collection[id][prop] = value;
}
}
return collection;
}
updateRecords(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/81.0.4044.138 Safari/537.36
.
Challenge: Record Collection
Link to the challenge: