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Start your free trialFred Tarbox
Courses Plus Student 17,110 PointsCannot read property 'Symbol(Symbol.iterator)' of undefined
This code works in Codepen but not here
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
hobbies = customers.reduce((a, personal) => { [ ...a, ...personal.hobbies];}, []);
//console.log(hobbies);
1 Answer
Steven Parker
231,269 PointsI get the exact same error in Codepen, as I would expect.
There's two syntax issues:
- when defining an arrow function with brackets, you must return the result
- "hobbies" is not a direct property of a "customers" array item (which is what "personal" represents)
Fred Tarbox
Courses Plus Student 17,110 PointsHere's my exact code in Codepen:
hobbies = customers.reduce(function(prev, curr) { return [ ...prev, ...curr.hobbies]; }, []); console.log(hobbies);
and here's the result:
["Bicycling", "Camping", "Guitar", "Reading", "Gardening", "Comics", "Chess", "Legos"]
I put this same code into the Challenge Task and get the error
Steven Parker
231,269 PointsThat's a bit different from what you show above, but it only resolves one of the two issues, and still produces the same error instead of that result on Codepen.
Since "hobbies" is not a direct property of a "customers" array item, you need to access it via the "personal" property ("curr
.personal
.hobbies
").
Fred Tarbox
Courses Plus Student 17,110 PointsFred Tarbox
Courses Plus Student 17,110 PointsGot it, thanks!