Hi,
Collection is a JSON object, containing an array of keys that correspond to an array of keys containing strings or another arrays?
object{
id= [100,200,300,]
100=[albumTitle, artist, tracks]
100.tracks=[name1,name2,name3]
};
If I would like to print the album title of 100 inside our JSON object “collection”, I would type console.log(collection[100].albumTitle); which takes the keyed item from array element 100, which is contained inside ourJSON object.
I’d appreciate someone putting this in their own English to explain a little better whats inside this JSON object.
Your code so far
// Setup
var collection = {
2548: {
albumTitle: 'Slippery When Wet',
artist: 'Bon Jovi',
tracks: ['Let It Rock', 'You Give Love a Bad Name']
},
2468: {
albumTitle: '1999',
artist: 'Prince',
tracks: ['1999', 'Little Red Corvette']
},
1245: {
artist: 'Robert Palmer',
tracks: []
},
5439: {
albumTitle: 'ABBA Gold'
}
};
// Only change code below this line
function updateRecords(object, id, prop, value) {
if (prop !== 'tracks' && value !== "") {
object[id][prop] = value;
} else if (prop === "tracks" && !object[id].hasOwnProperty("tracks")) {
object[id][prop] = [value];
} else if (prop === "tracks" && value !== "") {
object[id][prop].push(value);
} else if (value === "") {
delete object[id][prop];
}
return object;
}
updateRecords(collection, 5439, 'artist', 'ABBA');
console.log();
Your browser information:
User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36
.
Challenge: Record Collection
Link to the challenge: