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 551 Technologies & Applications4 384...

📈 Analytical overview of Telegram channel JavaScript

Channel JavaScript (@javascript) in the English language segment is an active participant. Currently, the community unites 31 439 subscribers, ranking 4 384 in the Technologies & Applications category and 13 551 in the India region.

📊 Audience metrics and dynamics

Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 31 439 subscribers.

According to the latest data from 13 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -193 over the last 30 days and by 21 over the last 24 hours, overall reach remains high.

Verification status: Not verified
Engagement rate (ER): The average audience engagement rate is 6.27%. 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 1 972 views. Within the first day, a publication typically gains 796 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 14 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.

31 439

Subscribers

+2124 hours

-537 days

-19330 days

1 972

Post views

~ 79624 hours

~ 1 05148 hours

6.27%

Engagement rate

~ 2

Posts per day

Ads index

beta

Posts Archive

31 431

✌️ How V8 is Making JSON.stringify More Than Twice as Fast The V8 team has made JSON.stringify over twice as fast, giving your apps an automatic performance boost for common tasks like API responses and caching, at least once Node upgrades to V8 13.8 (Node 24 uses V8 13.6). This article unpacks the low-level work behind the speedup. Patrick Thier (V8)

31 431

What is the output?

Anonymous voting

31 431

CHALLENGE

const target = { name: 'Sarah', age: 25 };

const handler = {
  get(obj, prop) {
    if (prop in obj) {
      return obj[prop];
    }
    return `Property '${prop}' not found`;
  },
  set(obj, prop, value) {
    obj[prop] = value.toString().toUpperCase();
    return true;
  }
};

const proxy = new Proxy(target, handler);
proxy.city = 'boston';
console.log(proxy.name);
console.log(proxy.city);
console.log(proxy.country);

31 431

What is the output?

Anonymous voting

31 431

CHALLENGE

class Logger {
  constructor(prefix) {
    this.prefix = prefix;
  }
  log(message) {
    console.log(`${this.prefix}: ${message}`);
  }
}

class Database {
  constructor(logger) {
    this.logger = logger;
  }
  save(data) {
    this.logger.log(`Saving ${data}`);
    return `${data}_saved`;
  }
}

const logger = new Logger('DB');
const db = new Database(logger);
const result = db.save('user');
console.log(result);

31 431

What is the output?

Anonymous voting

31 431

CHALLENGE

const Flyable = {
  fly() { return `${this.name} is flying`; }
};

const Swimmable = {
  swim() { return `${this.name} is swimming`; }
};

function createDuck(name) {
  return Object.assign({ name }, Flyable, Swimmable);
}

const duck = createDuck('Quackers');
console.log(duck.fly());
console.log(duck.swim());
console.log(Object.getOwnPropertyNames(duck));

31 431

🌟 Creator of Bun Jarred Sumner on Building Bun, Node.js Compatibility & AI in Dev Workflows

31 431

What is the output?

Anonymous voting

31 431

CHALLENGE

const compose = (...fns) => x => fns.reduceRight((acc, fn) => fn(acc), x);

const addPrefix = str => `prefix_${str}`;
const capitalize = str => str.charAt(0).toUpperCase() + str.slice(1);
const addSuffix = str => `${str}_suffix`;

const process = compose(addSuffix, capitalize, addPrefix);

console.log(process('data'));

31 431

🤟 AudioTee.js: macOS System Audio Capture for Node.js Wrapping around an (included) Swift-powered binary, this captures Mac system audio output and emits it as PCM encoded chunks at regular intervals. GitHub repo. Nick Payne

31 431

What is the output?

Anonymous voting

31 431

CHALLENGE

class VideoCall {
  constructor() {
    this.pc = { iceConnectionState: 'new' };
    this.streams = [];
  }
  
  async connect() {
    this.pc.iceConnectionState = 'checking';
    await Promise.resolve();
    this.pc.iceConnectionState = 'connected';
    this.streams.push('remote-video');
    return this.pc.iceConnectionState;
  }
  
  handleConnectionChange() {
    const states = ['new', 'checking', 'connected'];
    return states.map(state => {
      return this.pc.iceConnectionState === state ? `Status: ${state}` : null;
    }).filter(Boolean);
  }
}

const call = new VideoCall();
call.connect().then(() => {
  console.log(call.handleConnectionChange());
});

31 431

What is the output?

Anonymous voting

31 431

CHALLENGE

class ChatServer {
  constructor() {
    this.clients = new Set();
    this.messageLog = [];
  }
  
  connect(client) {
    this.clients.add(client);
    return () => this.clients.delete(client);
  }
  
  broadcast(message, sender) {
    this.messageLog.push(message);
    this.clients.forEach(client => {
      if (client !== sender) {
        client.receive(message);
      }
    });
  }
}

const server = new ChatServer();
const david = { name: 'David', receive: msg => console.log(`David got: ${msg}`) };
const sarah = { name: 'Sarah', receive: msg => console.log(`Sarah got: ${msg}`) };
const emma = { name: 'Emma', receive: msg => console.log(`Emma got: ${msg}`) };

const disconnectDavid = server.connect(david);
server.connect(sarah);
server.connect(emma);
server.broadcast('Hello everyone!', david);
disconnectDavid();
server.broadcast('Is David still here?', sarah);

console.log(server.clients.size);

31 431

✌️ The Many, Many, Many JavaScript Runtimes of the Last Decade A meaty article (which took a year to put together) covering the myriad of JavaScript runtimes and engines both past and present, from obvious picks like Node.js to cloud platforms and lesser known ‘honorable mentions’. This is a great summary to round out your JS ecosystem knowledge. Whatever, Jamie

31 431

What is the output?

Anonymous voting

31 431

CHALLENGE

function greet(name) {
  return `Hello, ${name}!`;
}

function highlight(strings, ...values) {
  return strings.reduce((result, str, i) => {
    return result + str + (values[i] ? `<em>${values[i]}</em>` : '');
  }, '');
}

const user = 'Sarah';
const status = 'online';

console.log(highlight`User ${user} is currently ${status}.`);

31 431

What is the output?

Anonymous voting

31 431

CHALLENGE

async function processValues() {
  try {
    console.log('Start');
    const a = await Promise.resolve('First');
    console.log(a);
    const b = await Promise.reject('Error');
    console.log(b);
    return 'Done';
  } catch (err) {
    console.log(err);
    return 'Recovered';
  } finally {
    console.log('Finally');
  }
}

processValues().then(result => console.log(result));