JavaScript

What is the otuput?

Anonymous Quiz

33%

🤣12👍8🤩5🔥3

579 voters5.28K views06:32

JavaScript

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This is a treasure!

✌️ Do you have any (old or new) Javascript book laying around? We want to see some pictures.

Share with us

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👍13❤4🔥2

6.03K views13:33

JavaScript

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❓

CHALLENGE


function* numberDoubler(arr) {
  for (const num of arr) {
    yield num * 2;
  }
}

const result = [...numberDoubler([1, 2, 3])].some(n => n % 4 === 0);

console.log(result);

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5.7K viewsedited 06:32

JavaScript

What is the output?

Anonymous Quiz

👍11🤔5🔥3❤1

506 voters5.2K views06:32

JavaScript

0:30

This media is not supported in your browser

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🆒

Projects on roadmap.sh

Projects are a fantastic way to validate your learning and solidify your knowledge. We're thrilled to introduce projects across all of our 50+ roadmaps!

We're starting with the backend roadmap, which now features 18 project ideas of varying difficulty levels. We'll gradually add projects to all our roadmaps making our roadmaps even more powerful.

Kamran Ahmed

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❤10👍2🤩1

6.15K views10:24

JavaScript

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CHALLENGE


function* idGenerator() {
  let id = 1;
  while (true) {
    yield id++;
  }
}

const gen = idGenerator();
const ids = Array.from({ length: 3 }, () => gen.next().value).map(id => `ID${id}`);

console.log(ids);

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❤3

5.73K views06:31

JavaScript

What is the output?

Anonymous Quiz

18%

["ID0", "ID1", "ID2"]

26%

["1", "2", "3"]

49%

["ID1", "ID2", "ID3"]

["ID1", "ID2", "ID2"]

👍8🤔6🔥4❤1

511 voters5.93K views06:31

JavaScript

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💻

What we got wrong about HTTP imports

Ryan Dahl

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❤3👍3🔥1

5.48K views13:03

JavaScript

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CHALLENGE


function* fibGenerator() {
  let a = 0, b = 1;
  while (true) {
    let next = a + b;
    a = b;
    b = next;
    yield next;
  }
}

const gen = fibGenerator();
const fibArray = Array.from({ length: 5 }, () => gen.next().value);

console.log(fibArray);

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❤4🤩1

5.75K views06:32

JavaScript

What is the output?

Anonymous Quiz

🔥7👍6

491 voters5.39K views06:32

JavaScript

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🤔

JS-PyTorch: A PyTorch-Like Library for JavaScript

Recently renamed from JS-Torch, this brings some of the magic from Python’s popular PyTorch library to JavaScript for training and testing neural networks in particular. We linked to it earlier this year, but it has added GPU support thanks to GPU.js.

Eduardo Leao

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❤6👍3🔥2

6.23K views13:07

JavaScript

CHALLENGE


function* alternatingGenerator() {
  yield 1;
  yield 2;
  yield 3;
}

const gen = alternatingGenerator();
const result = [gen.next().value, gen.next().value, gen.next().value].reduce((acc, curr) => acc + curr, 0);

console.log(result);

👍1

6K views06:31

JavaScript

What is the output?

Anonymous Quiz

👍7❤6🔥4🤩2

2.28K voters21.1K views06:31

JavaScript

🌲

Neon: Rust Bindings for Writing Node.js Modules

Or, as they put it: “Electrify Node.js with the power of Rust.” Neon makes it relatively easy to write code in the popular, high speed systems language and run it from Node, much like any other native extension.

Neon Contributors

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👍7🔥4❤2

6.32K views13:02

JavaScript

CHALLENGE


function* reverseGenerator(arr) {
  for (let i = arr.length - 1; i >= 0; i--) {
    yield arr[i];
  }
}

const result = [...reverseGenerator([1, 2, 3, 4, 5])].join('');

console.log(result);

👍3🤔1

6.09K views06:31

JavaScript

What is the output?

Anonymous Quiz

👍16❤5🔥4

598 voters5.75K views06:31

JavaScript

🤟

Node.js Toolbox: A Way to Find and Compare Node.js Packages

A fantastic community maintained resource that presents a category-based way to find packages and libraries. For example, you can check out HTTP frameworks, browser testing, query builders, and more. You can compare libraries in various ways, see their download count, or edit/submit listings yourself.

Maxim Orlov

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❤6🔥3👍2

6.67K views14:03

JavaScript

CHALLENGE


const weakMap = new WeakMap();
const obj1 = {};
const obj2 = {};

weakMap.set(obj1, 'value1');
weakMap.set(obj2, 'value2');

const arr = [obj1, obj2];
const result = arr.map(obj => weakMap.get(obj)).join(', ');

console.log(result);

👍3❤1

6.17K views06:32

JavaScript

What is the output?

Anonymous Quiz

"undefined, undefined"

50%

"value1, value2"

👍14❤8🔥7

540 voters6.46K views06:32

JavaScript

🔥

We're on the brink of another world browser war

Fireship

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🔥11❤5👍2🤔2

5.97K views13:27

JavaScript

CHALLENGE


function* idGenerator() {
  let id = 1;
  while (true) {
    yield id++;
  }
}

const gen = idGenerator();
const weakMap = new WeakMap();
const objs = [{}, {}, {}];

objs.forEach(obj => weakMap.set(obj, gen.next().value));

const result = objs.map(obj => weakMap.get(obj)).filter(id => id % 2 === 0);

console.log(result);

👍5❤4🔥2

6.2K views06:31

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