JavaScript

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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

India13 353 Technologies & Applications4 370...

📈 Analytical overview of Telegram channel JavaScript

Channel JavaScript (@javascript) in the English language segment is an active participant. Currently, the community unites 31 406 subscribers, ranking 4 370 in the Technologies & Applications category and 13 353 in the India region.

📊 Audience metrics and dynamics

Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 31 406 subscribers.

According to the latest data from 20 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -164 over the last 30 days and by -20 over the last 24 hours, overall reach remains high.

Verification status: Not verified
Engagement rate (ER): The average audience engagement rate is 5.88%. Within the first 24 hours after publication, content typically collects 2.24% reactions from the total number of subscribers.
Post reach: On average, each post receives 1 848 views. Within the first day, a publication typically gains 705 views.
Reactions and interaction: The audience actively supports content: the average number of reactions per post is 6.
Thematic interests: Content is focused on key topics such as javascript, console.log(gen.next().value, processdata, remix, acc.

📝 Description and content policy

The author describes the resource as a platform for expressing subjective opinions:
“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”

Thanks to the high frequency of updates (latest data received on 21 June, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.

31 406

Subscribers

-2024 hours

-307 days

-16430 days

1 848

Post views

~ 70524 hours

~ 94248 hours

5.88%

Engagement rate

~ 2

Posts per day

Ads index

beta

Posts Archive

31 406

What is the output?

Anonymous voting

31 406

CHALLENGE


function* genFunc() {
  yield Symbol('A');
  yield new Function('return this')();
}

const obj = { key: genFunc().next().value };
obj.key = genFunc().next().value;

console.log(obj.key === globalThis);

31 406

What is the output?

Anonymous voting

31 406

CHALLENGE


let obj1 = { key: 'value1' };
let obj2 = { key: 'value2' };

const map = new Map();
const weakMap = new WeakMap();

map.set(obj1, 'mapValue');
weakMap.set(obj2, 'weakMapValue');

obj1 = null;  // Changing reference
obj2 = null;  // Changing reference

console.log(map.has(obj1));
console.log(weakMap.has(obj2));

31 406

✌️ SOME UPDATES JavaScript Weekly

31 406

✌️ Promises from the Ground Up Josh notes that in order to truly understand promises, a fundamental part of modern JS development, we need “a surprisingly deep understanding of how JavaScript works and what its limitations are”. Luckily, this tutorial covers all the critical context you need. Josh W Comeau 👀 If you're a bit more advanced, you might enjoy Alex MacArthur's look at controlling promises using Promise.withResolvers().

31 406

What is the output?

Anonymous voting

31 406

CHALLENGE


function* generator() {
  yield 1;
  yield new Promise(resolve => resolve(2));
  yield 3;
}

const gen = generator();
console.log(gen.next().value);
gen.next().value.then(console.log);
console.log(gen.next().value);

31 406

Even though Armenia 🇦🇲 is a small country, we have a really big JavaScript community 😎. There are many events related to JavaScript, and another one is happening tomorrow: JSConf Armenia 2024! If you are in Armenia and would like to attend, just grab your tickets from the website.

31 406

What is the output?

Anonymous voting

31 406

CHALLENGE


function* generator() {
  yield 1;
  yield 2;
  return 3;
}

const gen = generator();
console.log(gen.next().value);
console.log(gen.next().value);
console.log(gen.next().value);

31 406

🌲 Some updates related to the Node.js world

31 406

What is the output?

Anonymous voting

31 406

CHALLENGE


function* generator() {
  const value = yield 1;
  yield value;
}

const gen = generator();
console.log(gen.next().value);
console.log(gen.next(2).value);

31 406

🍊 Qlock: A JavaScript Quine Clock We linked to Martin's array of creative JavaScript experiments earlier, but why not finish with one that particularly tickled us? A quine is a program that takes no input but manages to produce, as output, its own source code. Here’s a fun JavaScript example that isn’t merely a quine, but a clock too. Martin Kleppe

31 406

What is the output?

Anonymous voting

31 406

CHALLENGE


function* generator1() {
  yield 1;
  yield 2;
}

function* generator2() {
  yield* generator1();
  yield 3;
}

const gen = generator2();
console.log(gen.next().value);
console.log(gen.next().value);
console.log(gen.next().value);

31 406

✌️ Regexper: Display JavaScript Regular Expressions as Railroad Diagrams Might come in handy for learning regular expressions or if you have a complex regular expression and you don’t know what it does (not an uncommon situation..!) Jeff Avallone

31 406

What is the output?

Anonymous voting

31 406

CHALLENGE


function* generator() {
  yield 1;
  yield* [2, 3];
  yield 4;
}

const gen = generator();
for (const value of gen) {
  console.log(value);
}