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waypoint: reccord collection
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// 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 update(id, prop, value) { | |
if (value !== "" && prop === "tracks") { | |
collection[id][prop].push([value]); | |
} else if(value !== "") { | |
collection[id][prop] = value; | |
} else { | |
delete collection[id][prop]; | |
} | |
return collection; | |
} | |
// Alter values below to test your code | |
update(5439, "artist", "ABBA"); | |
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