Tell us what’s happening:
I’ve been trying to create an array inside the object for one hour now, just couldn’t do it.
After updateRecords(recordCollection, 5439, "tracks", "Take a Chance on Me")
, tracks
should have the string Take a Chance on Me
as the last element.
My code just couldn’t pass this step because there isn’t any array at the beginning you have to create one. At the first, I created an empty array but that didn’t work since there are arrays with values. So, I came up with these Array.isArray() idea, but it doesn’t work as I wanted, it creates an array the second time when you pass a value inside the object. Please help.
**Your code so far**
// Setup
const recordCollection = {
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(records, id, prop, value) {
if(value == ""){
delete records[id][prop];
} else if(prop == "tracks" && !records[id].hasOwnProperty("tracks")){
records[id][prop] = value;
} else if(prop == "tracks" && value != undefined){
if(!Array.isArray(records[id][prop])){
records[id][prop] = []; // problem here!!!
}
records[id][prop].push(value);
} else {
records[id][prop] = value;
}
return records;
}
updateRecords(recordCollection, 5439, 'artist', 'ABBA');
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Challenge: Record Collection
Link to the challenge: