TGViewer
Channel Public Channel
JavaScript

JavaScript

@javascript

A resourceful newsletter featuring the latest and most important news, articles, books and updates in the world of #javascript 🚀 Don't miss our Quizzes!

Let's chat: @nairihar
Open in Telegram
Subscribers
31K
Photos
1.2K
Videos
10
Links
901

Showing posts older than #1631 · Back to latest

Older Posts 20 shown
Post #1630 5.82K
😆 So true ...
  • 🤣 47
  • ❤ 7
  • 🔥 6
Post #1629 5.56K
  • ❤ 10
  • 👍 7
  • 🔥 1
Post #1628 5.61K
CHALLENGE

function createCounter() {
  let count = 0;
  return {
    increment() {
      count++;
      return count;
    },
    getCount() {
      return count;
    }
  };
}

const counter = createCounter();

console.log(counter.increment());
console.log(counter.getCount());
console.log(counter.increment());
console.log(counter.getCount());
  • 👍 7
  • ❤ 4
  • 🔥 3
Post #1627 5.64K
🍊 Rspack 1.0: The Rust-Powered JavaScript Bundler

Far from being ‘yet another bundler’ with its own approach and terminology to learn, Rspack prides itself on being webpack API and ecosystem compatible, while offering many times the performance. The team now considers it production ready and encourages you to try your webpack-based projects on it.

Rspack Contributors
  • ❤ 3
  • 👍 2
  • 🔥 1
Post #1626 5.4K
  • ❤ 12
  • 👍 8
  • 🤔 8
  • 🔥 2
Post #1625 5.47K
❓ CHALLENGE

const numbers = [0,0,0];

let i = 0;
const result = numbers.reduce((acc, _) => {
  return ++acc;
}, i);

console.log(i, result);
  • 👍 3
Post #1624 5.97K
  • 🔥 9
  • ❤ 7
  • 👍 6
Post #1623 5.81K
Sponsored by Bryntum 👮‍♀️
World Class Web Components

❓ CHALLENGE

const obj = {
  outer: 1,
  inner: {
    outer: 10,
    inner: 20
  }
};

let result = 0;

with (obj) {
  result += outer;
  with (inner) {
    result += outer + inner;
  }
}

console.log(result);
  • 👍 5
  • 🤔 3
  • ❤ 1
Post #1622 5.32K
Sponsored by Bryntum 👮‍♀️
World Class Web Components

✌️ JS Dates are About to Be Fixed

Handling dates and times is famously a painful area for programmers and JavaScript hasn’t done a lot to make it easier. Libraries like Moment.js help a lot, but Iago looks at how the Temporal proposal and its features will begin to help a lot more over time.

Iago Lastra
  • ❤ 3
  • 👍 3
  • 🔥 1
Post #1621 5.67K
Sponsored by Bryntum 👮‍♀️
World Class Web Components

🌲 How to Create an NPM Package in 2024

Sounds simple, but there are a lot of steps involved if you want to follow best practices, introduce useful tools, and get things just right. Matt Pocock walks through the process here, and there’s a 14-minute screencast too, if you’d prefer to watch along.

Matt Pocock
  • ❤ 3
  • 👍 3
  • 🔥 1
Post #1620 5.67K
  • 👍 8
  • 🤩 4
  • ❤ 1
  • 🔥 1
Post #1619 6.04K
Sponsored by Bryntum 👮‍♀️
World Class Web Components

❓ CHALLENGE


const weakMap = new WeakMap();
const arr = [{}, {}, {}];

arr.forEach((obj, index) => weakMap.set(obj, index));

arr.splice(1, 1); // Remove the second element

const result = arr.map(obj => weakMap.get(obj));

console.log(result);
  • 👍 5
  • 🔥 2
  • ❤ 1
Post #1618 6.01K
  • 🔥 7
  • 👍 2
Post #1617 5.89K
Sponsored by Bryntum 👮‍♀️
World Class Web Components

❓ CHALLENGE


const weakMap = new WeakMap();
const arr = [1, 2, 3, 4];
const objs = arr.map(n => ({ n }));

objs.forEach((obj, index) => weakMap.set(obj, arr.slice(0, index + 1)));

const result = objs.map(obj => weakMap.get(obj).reduce((acc, num) => acc + num, 0));

console.log(result);
  • 👍 7
  • ❤ 2
  • 🤔 2
Post #1616 5.36K
Sponsored by Bryntum 👮‍♀️
World Class Web Components

❓ CHALLENGE


const weakMap = new WeakMap();
let obj = { name: 'initial' };

function changeName(obj) {
  weakMap.set(obj, obj.name);
  obj.name = 'changed';
}

changeName(obj);

console.log(weakMap.get(obj));
Post #1615 5.27K
  • 👍 9
  • ❤ 1
  • 🔥 1
  • 🤣 1
Post #1613 5.48K
  • 🔥 8
  • 👍 3
Post #1612 5.8K
Sponsored by Bryntum 👮‍♀️
World Class Web Components

❓ CHALLENGE


function* infiniteGenerator() {
  let i = 0;
  while (true) {
    yield i++;
  }
}

const weakMap = new WeakMap();
const gen = infiniteGenerator();

weakMap.set(gen, gen.next().value);

const result = weakMap.get(gen) + gen.next().value;

console.log(result);
  • 👍 15
  • 🔥 4
  • ❤ 3
Older posts →
Threads Profile ViewerView any public Threads profile without an account.Open ThreadLook →Writing with AI? Make it sound human.Metric37 rewrites AI drafts so they read naturally. Free AI detector, 1,500 words free.Try Metric37 →