👩‍💻 Table of Contents: Build your own X

This repository is a compilation of well-written, step-by-step guides for re-creating our favorite technologies from scratch.

codecrafters-io

❓ CHALLENGE

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

const result = numbers.reduce((acc, num) => {
  if (num % 2 === 0) {
    acc.even += num;
  } else {
    acc.odd *= num;
  }
  return acc;
}, { even: 0, odd: 1 });

console.log(result);

👩‍💻 Vue 3.4 Released

Vue 2 went ‘end of life’ last week, but never fear, we got a new version of Vue 3 to make up for it, complete with a rewritten, faster template parser, and a more efficient reactivity system. If you prefer a screencast tour, ▶️ Erik Hanchett has one for you.

EVAN YOU

👀 Java vs JavaScript | Friends or Enemies

In the modern IT industry, Java and JavaScript stand as leading programming languages for building scalable and reliable software systems. They offer flexibility and automation capabilities for implementing business rules.

Gnel Simonyan

👀 Let's Bring Back JavaScript's with Statement..?

Famously roasted in JavaScript: The Good Parts before its deprecation, with isn’t a popular language feature at all, so Alex's appeal here is partly tongue in cheek. Nonetheless, with has some potentially interesting uses in modern JavaScript.

ALEX MACARTHUR

❓ CHALLENGE

function Car(make, model) {
  this.make = make;
  this.model = model;
}

Car.prototype.displayInfo = function () {
  return `Make: ${this.make}, Model: ${this.model}`;
};

const myCar = new Car('Toyota', 'Camry');

console.log(myCar.displayInfo());

🎉 Thank you, 8000 times over!

Our JavaScript community has grown to 8K strong, and we're thrilled to have each and every one of you on this coding journey with us! 🚀

⚡️ Boost us in Telegram

🔥 JavaScript Summit Armenia 2024

In addition to maintaining this newsletter, we also organize conferences.

Previous year, 13 super-smart devs shared cool stuff with 800 friends. Halls were buzzing, and we loved watching it!

Guess what? Another fun year is coming! We'll learn, help each other, and make our community bigger.

More talks, a bigger place, and more friends – it's gonna be awesome!

P.S. If you want to become our next Speaker or Sponsor contact me.

P.S. You can follow our conference channel on telegram.

#javascriptarmenia #conference

❓ CHALLENGE

const numbers = [4, 9, 16, 25];

const result = numbers.every(num => Math.sqrt(num) % 1 === 0);

console.log(result);

❓ CHALLENGE

const sentence = 'The quick brown fox jumps over the lazy dog';

const result = sentence.split(/\s+/).map(word => word.length).filter(length => length % 2 === 0);

console.log(result);

⛽️ When 'Everything' Becomes Too Much: Fresh npm Package Chaos

While many of us were taking a break, some folks published an 'everything' package that depended upon all public npm packages, resulting in millions of transitive dependencies. This caused.. some problems. One of the folks involved also shared the story from behind the scenes.

FEROSS ABOUKHADIJEH (SOCKET)

❓ CHALLENGE

const text = 'Hello, World!';

const result = text.match(/l+/g);

console.log(result);