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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 573 Technologies & Applications4 377...

📈 Analytical overview of Telegram channel JavaScript

Channel JavaScript (@javascript) in the English language segment is an active participant. Currently, the community unites 31 441 subscribers, ranking 4 377 in the Technologies & Applications category and 13 573 in the India region.

📊 Audience metrics and dynamics

Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 31 441 subscribers.

According to the latest data from 11 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -198 over the last 30 days and by 17 over the last 24 hours, overall reach remains high.

Verification status: Not verified
Engagement rate (ER): The average audience engagement rate is 6.20%. Within the first 24 hours after publication, content typically collects 2.53% reactions from the total number of subscribers.
Post reach: On average, each post receives 1 949 views. Within the first day, a publication typically gains 797 views.
Reactions and interaction: The audience actively supports content: the average number of reactions per post is 7.
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 12 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.

31 441

Subscribers

+1724 hours

-587 days

-19830 days

1 949

Post views

~ 79724 hours

~ 1 04548 hours

6.20%

Engagement rate

~ 2

Posts per day

Ads index

beta

Posts Archive

31 424

What is the output?

Anonymous voting

31 424

CHALLENGE


const config = {
  host: "localhost",
  port: 3000,
  db: {
    name: "mydb",
    retries: 5
  }
};

Object.freeze(config);

config.port = 9999;
config.newProp = "injected";
config.db.retries = 99;
delete config.host;

console.log(
  config.port,
  config.newProp,
  config.db.retries,
  config.host
);

31 424

👀 Fuse.js 7.3: Lightweight Fuzzy-Search Want a search feature tolerant to ambiguous input without a dedicated backend? v7.3 adds per-term fuzzy matching and a static method for single string matching, while v7.4 beta adds worker-based distributed search for tackling huge datasets. A demo shows off the basics. Kiro Risk

31 424

What is the output?

Anonymous voting

31 424

CHALLENGE


const name = "Carlos";
const age = 28;
const score = 95;

const player = {
  name,
  age,
  score,
  greet() {
    return `${this.name} (${this.age}) scored ${this.score}`;
  },
  get rank() {
    return this.score >= 90 ? "Gold" : "Silver";
  }
};

const { name: playerName, rank, greet } = player;

console.log(`${playerName} | ${rank} | ${greet.call(player)}`);

31 424

In CSS is DOOMed, Niels Leenheer shows off how he implemented a version of 1993's Doom using purely CSS rendering (with the game logic in JavaScript). Play it for yourself or check out the code.

31 424

What is the output?

Anonymous voting

31 424

CHALLENGE


function createUser(
  name,
  role = "viewer",
  permissions = [role],
  metadata = { createdBy: name, level: permissions.length }
) {
  return { name, role, permissions, metadata };
}

const user1 = createUser("Carlos");
const user2 = createUser("Diana", "admin", ["read", "write", "delete"]);
const user3 = createUser("Eve", "editor", undefined, { createdBy: "system", level: 99 });

console.log(user1.role, user1.permissions, user1.metadata.level);
console.log(user2.metadata.createdBy, user2.permissions.length);
console.log(user3.permissions[0], user3.metadata.level);

31 424

✌️ JSIR: A High-Level IR for JavaScript from Google Google has open sourced a new tool (JSIR) and proposed an industry-standard IR (Intermediate Representation – if an AST tells you what the code looks like, an IR tells you what it does) for JavaScript. Already used at Google for analysis and code transformation, the underlying idea could form a foundation for a new generation of tooling. Zhixun Tan (Google)

31 424

What is the output?

Anonymous voting

31 424

CHALLENGE

function Vehicle(make, model, year) {
  this.make = make;
  this.model = model;
  this.year = year;
  this.speed = 0;
}

Vehicle.prototype.accelerate = function (amount) {
  this.speed += amount;
  return this;
};

Vehicle.prototype.describe = function () {
  return `${this.year} ${this.make} ${this.model} going ${this.speed}km/h`;
};

function ElectricVehicle(make, model, year, range) {
  Vehicle.call(this, make, model, year);
  this.range = range;
}

ElectricVehicle.prototype = Object.create(Vehicle.prototype);
ElectricVehicle.prototype.constructor = ElectricVehicle;

ElectricVehicle.prototype.describe = function () {
  return Vehicle.prototype.describe.call(this) + ` | Range: ${this.range}km`;
};

const car = new ElectricVehicle("Tesla", "Model 3", 2023, 500);
car.accelerate(60).accelerate(40);

console.log(car.describe());
console.log(car instanceof ElectricVehicle);
console.log(car instanceof Vehicle);
console.log(car.constructor === ElectricVehicle);

31 424

🔥 Tragic mistake... Anthropic leaks Claude’s source code Fireship

31 424

What is the output?

Anonymous voting

31 424

CHALLENGE


const str = "  Hello, World!  ";

const result = str
  .trim()
  .split(", ")
  .map((word, i) => {
    if (i % 2 === 0) return word.toUpperCase();
    return word.toLowerCase().replace("!", "@");
  })
  .reverse()
  .join(" | ");

console.log(result);

31 424

What is the output?

Anonymous voting

31 424

CHALLENGE

const delay = (ms, val) => new Promise(res => setTimeout(res, ms, val));

const p1 = delay(300, "alpha");
const p2 = Promise.reject("network error");
const p3 = delay(100, "gamma");
const p4 = Promise.reject("timeout");

Promise.allSettled([p1, p2, p3, p4]).then(results => {
  const summary = results.map(r =>
    r.status === "fulfilled"
      ? `ok:${r.value}`
      : `fail:${r.reason}`
  );
  console.log(summary.join(" | "));
});

31 424

🤔 axios Package Compromised; Malicious Versions Added a Trojan Dependency Axios is an HTTP library that gets 100M+ downloads a week, largely due to its legacy popularity. An attacker took advantage of that to roll out a version with a malicious dependency including a remote access trojan (though Axios' codebase itself was fine). This is big, as even if you don’t use Axios, your dependencies might. Here's how to see if you're affected. Ashish Kurmi

31 424

What is the output?

Anonymous voting

31 424

CHALLENGE

function* range(start, end) {
  while (start < end) {
    yield start++;
  }
}

function* evens(iter) {
  for (const val of iter) {
    if (val % 2 === 0) yield val;
  }
}

function* take(n, iter) {
  let count = 0;
  for (const val of iter) {
    if (count++ >= n) return;
    yield val;
  }
}

function* pipeline() {
  yield* take(3, evens(range(1, 20)));
  yield* take(2, range(10, 15));
}

const result = [...pipeline()];
console.log(result);

31 424

What is the output?

Anonymous voting