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JavaScript JavaScript Array Iteration Methods Combining Array Methods Nested Data

Bogdan-Adrian Cornea
Bogdan-Adrian Cornea
9,347 Points

Can anyone help me understand what i'm doing wrong?

I tried to use map and reduce, but i'm getting error every time. can anyone help me?

app.js
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 

  .map(customer => customer.personal.map(hobby => hobby.hobbies))
  .reduce((arr, customerHobby) => [...arr, ...customerHobby],[]);

console.log(hobbies);
Bogdan-Adrian Cornea
Bogdan-Adrian Cornea
9,347 Points

Nvm, i solved it after 1 h.

i use the following code

hobbies = customers

.map (function (hobby) {
return hobby.personal.hobbies; // return 3 array only with hobby;
}) .reduce((arr, hobbyList) => [...arr,...hobbyList], []);

console.log(hobbies);

Hope it will help