Tell us what’s happening:
Hey everyone. I’ve been stuck on this for a bit now. I have tried solving this in many different ways but always come to the same result. I have one unchecked bullet point and keep getting the same error message over and over again.
The error message is:
“collection[id][prop].push is not a function”
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"
}
};
// Keep a copy of the collection for tests
var collectionCopy = JSON.parse(JSON.stringify(collection));
// Only change code below this line
function updateRecords(id, prop, value) {
if(value === ""){
delete collection[id][prop];
}else if(prop !== "tracks"){
collection[id][prop] = value;
}else if(prop === "tracks"){
if(!collection[id].hasOwnProperty(prop)){
collection[id][prop] = [];
collection[id][prop] = value;
}
collection[id][prop].push(value);
}
return collection;
}
// Alter values below to test your code
updateRecords(5439, "artist", "ABBA");
I have tried a different approach:
function updateRecords(id, prop, value) {
if(prop !== "tracks" && value !== ""){
collection[id][prop] = value;
}else if(prop === "tracks" && value !== ""){
collection[id][prop].push(value);
}else if(prop === "tracks" && !collection[id][prop]){
collection[id][prop] = []
}else if(value === ""){
delete collection[id][prop];
}
return collection;
}
This time I got the following error: “Cannot read property ‘push’ of undefined”
The unchecked task, however is still the same one.
Your browser information:
User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36
.
Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/record-collection/