Tell us what’s happening:
Describe your issue in detail here.
Bonjour cher amis
Je suis embrouillé avec les propriétés qui sont en crochés et sans crochés .
List item
Pourquoi pour prop, et id on utilise les crochés
exemple: records[id][prop] .
List item
Pourquoi la valeur value on utilise une fois sans les crochés et avec les crochés ?
Exemple:
records[id][prop] = value;
records[id][prop] = [value];
records[id][prop].push(value);
Your code so far
// Setup
var 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(prop !== "tracks" && value !== ""){
records[id][prop] = value;
}
else if(prop == "tracks" && records[id].hasOwnProperty('tracks') == false){
records[id][prop] = [value];
}
else if(prop == "tracks" && value !== ""){
records[id][prop].push(value);
}
else if(value == ""){
delete records[id][prop];
}
return records;
}
updateRecords(recordCollection, 5439, 'artist', 'ABBA');
**Your browser information:**
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.106 Safari/537.36
Je ne peux pas parler français donc je m’excuse pour la mauvaise communication.
I cannot speak French so I apologize for miscommunication.
Bracket notation is required for computed property names such as variables. An example:
const variableMakesNoDifference = 'hello';
const myObject = {};
//I now have an empty object and to use the variable value
//to make a property I'll need to use bracket notation
myObject[variableMakesNoDifference] = 'random string';
console.log(myObject) //{hello: 'random string'};
//if I did not use brackets ...
myObject.variableMakesNoDifference = 'second random string';
console.log(myObject) // {hello: 'random string', variableMakesNoDifference: 'second random string'}