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Start your free trialSamuel Fortunato
20,229 PointsJavaScript Array Iteration Methods Last Exercise = Stumped
The last exercise in this course has got me.
const customers = [
{
name: "Tyrone",
personal: {
age: 33,
hobbies: ["Bicycling", "Camping"]
}
},
{
name: "Elizabeth",
personal: {
age: 25,
hobbies: ["Guitar", "Reading", "Gardening"]
}
},
{
name: "Penny",
personal: {
age: 36,
hobbies: ["Comics", "Chess", "Legos"]
}
}
];
let hobbies;
// hobbies should be: ["Bicycling", "Camping", "Guitar", "Reading", "Gardening", "Comics", "Chess", "Legos"]
// Write your code below
This is what I have so far:
hobbies = customers
.reduce((hobbiesList, customer) => customer.personal.hobbies.map(hobby => hobby));
Not working. Don't get it. :(
1 Answer
Steven Parker
231,184 PointsYou seem to be heading in the right direction. Here's a few hints:
- that "map" function isn't doing anything, you can remove it entirely
- you might need to give "reduce" an additional argument for an initial value
- the function needs to use both arguments
- the function should do something that combines two arrays together into one
Samuel Fortunato
20,229 PointsSamuel Fortunato
20,229 PointsOk, I've gotten farther. My code is now this:
And my output is now this, according to the code challenge:
"Bicycling,CampingGuitar,Reading,GardeningComics,Chess,Legos"
Seems like I just have to get each array item individually and not grab the whole thing? Why isn't reduce() grabbing each array item individually? I thought that's what it did?
Steven Parker
231,184 PointsSteven Parker
231,184 PointsYou're really close now! You're successfully combining all the individual hobbies into a string, so now you only need to change it so that the combination is another array. Hint: the "spread" operator ("...") might be useful.