Still not working here. I decided to make it a separate post because nobody responded to last post

JavaScript
1

Tell us what’s happening:

TypeError: Cannot read property ‘push’ of undefined for objective
After updateRecords(5439, "tracks", "Take a Chance on Me") , tracks should have "Take a Chance on Me" as the last element.

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 (id.hasOwnProperty("tracks")){
collection[id][prop] = value;
} else {
  var track = [];
  var track = collection[id][prop];
  track.push(value);
}
} else {
collection[id][prop] = value;
}
console.log (collection);
return collection; 
}

updateRecords(5439, "tracks", "Take a Chance on Me");

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36.

Challenge: Record Collection

Link to the challenge:

2

Hello there.

This line is where your error is:

var track = [];
var track = collection[id][prop];
track.push(value);