❓ CHALLENGE #224

const data = [
  { id: 1, name: 'Alice', age: 25, gender: 'Female' },
  { id: 2, name: 'Bob', age: 30, gender: 'Male' },
  { id: 3, name: 'Charlie', age: 22, gender: 'Male' },
  { id: 4, name: 'David', age: 35, gender: 'Male' },
];

const result = data
  .filter(person => person.gender === 'Male')
  .map(person => ({ ...person, isSenior: person.age > 30 }))
  .sort((a, b) => a.age - b.age)
  .slice(0, 2)
  .reduce((acc, person) => {
    acc[person.name] = person.isSenior;
    return acc;
  }, {});

console.log(result);

❓ CHALLENGE #225

const data = [1, 2, 3, 4, 5];

const result = data.map(num => Array.from({ length: num }, (_, index) => index + 1));

console.log(result);

🌍 Three.js Procedural Planets

This is gorgeous! You can have a lot of fun adjusting the parameters to change the outcome, or you can spin up and play with your own copy using the source code. If you don’t want to stress out your browser, you can see how it looks ▶️ in this video.

DANIEL GREENHECK

❓ CHALLENGE #226

const data = [1, 2, 3, 4, 5];

const result = data.flatMap(num => Array.from({ length: num * 2 - 1 }, (_, index) => index % 2 === 0 ? num : index + 1));

console.log(result);

😐 You don't need JavaScript for that

“Just because you know something needs JavaScript, doesn’t mean it still does. You can make better websites if you test those assumptions every now and then.”

KILLIAN VALKHOF

🎄Merry Christmas to all the members of our JavaScript community!

P.S. Dear premium Telegram users, this Christmas, the gift is in your hands! Boost us on Telegram for free, and your support becomes the festive present to all of us (it enables features like stories and more). 🌟

❓ CHALLENGE #227

if (false) {
    function foo() {
        return 1;
    }
}

console.log(foo());

👩‍💻 Create Your Own JavaScript Runtime with V8, Libuv & More ||Bun? Deno? Node.js?

Erick Wendel

❓ CHALLENGE #228

const numbers = [2, 4, 6, 8, 10];

const result = numbers.reduce((acc, val) => {
  acc[val] = val * 2;
  return acc;
}, {});

console.log(result);

⭐️As 2023 comes to a close, let's wrap it up with a swift survey to pinpoint everyone's favorite frameworks.