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前往频道在 Telegram

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

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印度13 551技术与应用4 384

📈 Telegram 频道 JavaScript 的分析概览

频道 JavaScript (@javascript) 英语 语言赛道中的 是活跃参与者。目前社区聚集了 31 443 名订阅者，在 技术与应用 类别中位列第 4 384，并在 印度 地区排名第 13 551 位。

📊 受众指标与增长动态

自 невідомо 创建以来，项目保持高速增长，吸引了 31 443 名订阅者。

根据 13 六月, 2026 的最新数据，频道保持稳定运转。过去 30 天订阅人数变化为 -193，过去 24 小时变化为 21，整体触达仍然可观。

  • 认证状态： 未认证
  • 互动率 (ER)： 平均受众互动率为 6.27%。内容发布后 24 小时内通常能获得 2.53% 的反应，占订阅者总量。
  • 帖子覆盖： 每篇帖子平均可获得 1 972 次浏览，首日通常累积 796 次浏览。
  • 互动与反馈： 受众积极参与，单帖平均反应数为 7。
  • 主题关注点： 内容集中在 javascript, console.log(gen.next().value, processdata, remix, acc 等核心主题上。

📝 描述与内容策略

作者将该频道定位为表达主观观点的平台：
“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”

凭借高频更新（最新数据采集于 14 六月, 2026），频道始终保持新鲜度与高覆盖。分析显示受众积极互动，使其成为 技术与应用 类别中的关键影响点。

31 443
订阅者
+2124 小时
-537 天
-19330 天
帖子存档
JavaScript
JavaScript
31 439
CHALLENGE 
const target = { name: 'Sarah', age: 25 };
const handler = {
  get(obj, prop) {
    if (prop === 'toString') {
      return () => `Person: ${obj.name}`;
    }
    return Reflect.get(obj, prop);
  },
  has(obj, prop) {
    return prop !== 'age' && Reflect.has(obj, prop);
  }
};
const proxy = new Proxy(target, handler);
console.log(proxy.name);
console.log('age' in proxy);
console.log(proxy.toString());

JavaScript
JavaScript
31 439
What is the output?
Anonymous voting

JavaScript
JavaScript
31 439
CHALLENGE 
class StateMachine {
  constructor() {
    this.state = 'idle';
    this.transitions = {
      idle: { start: 'running', reset: 'idle' },
      running: { pause: 'paused', stop: 'stopped' },
      paused: { resume: 'running', stop: 'stopped' },
      stopped: { reset: 'idle' }
    };
  }
  
  transition(action) {
    const nextState = this.transitions[this.state]?.[action];
    if (nextState) {
      this.state = nextState;
      return true;
    }
    return false;
  }
}

const sm = new StateMachine();
console.log(sm.transition('start'));
console.log(sm.state);
console.log(sm.transition('reset'));
console.log(sm.state);

JavaScript
JavaScript
31 439
😆

JavaScript
JavaScript
31 439
What is the output?
Anonymous voting

JavaScript
JavaScript
31 439
CHALLENGE 
class ValidationError extends Error {
  constructor(message, code) {
    super(message);
    this.name = 'ValidationError';
    this.code = code;
  }
}

function processData(data) {
  try {
    if (!data) throw new ValidationError('Data required', 'MISSING_DATA');
    return data.toUpperCase();
  } catch (error) {
    if (error instanceof ValidationError) {
      console.log(`${error.name}: ${error.message} (${error.code})`);
    } else {
      console.log(`Unexpected error: ${error.message}`);
    }
  }
}

processData(null);
processData(42);

JavaScript
JavaScript
31 439
What is the output?
Anonymous voting

JavaScript
JavaScript
31 439
CHALLENGE 
class CustomError extends Error {
  constructor(message, code) {
    super(message);
    this.name = 'CustomError';
    this.code = code;
  }
}

try {
  throw new CustomError('Something went wrong', 500);
} catch (error) {
  console.log(error instanceof Error);
  console.log(error instanceof CustomError);
  console.log(error.name);
  console.log(typeof error.code);
}

JavaScript
JavaScript
31 439
What is the output?
Anonymous voting

JavaScript
JavaScript
31 439
CHALLENGE 
let cache = new Map();
let obj = { name: 'Emma', age: 28 };

function memoize(fn) {
  return function(...args) {
    const key = JSON.stringify(args);
    if (cache.has(key)) {
      console.log('Cache hit');
      return cache.get(key);
    }
    const result = fn.apply(this, args);
    cache.set(key, result);
    return result;
  };
}

const process = memoize((data) => {
  console.log('Processing:', data.name);
  return data.age * 2;
});

process(obj);
process(obj);
obj.age = 30;
process(obj);
console.log('Cache size:', cache.size);

JavaScript
JavaScript
31 439
⛽️ npm-check-updates 18.2: Update package.json Dependencies to Latest Versions That is, as opposed to the specified versions.
⛽️ npm-check-updates 18.2: Update package.json Dependencies to Latest Versions That is, as opposed to the specified versions. Includes a handy -i interactive mode so you can look at potential upgrades and then opt in to them one by one. v18.2 adds a ‘cooldown’ feature to help protect against supply chain attacks by requiring package versions to be published at least the given number of days before considering them for upgrade. Raine Revere

JavaScript
JavaScript
31 439
What is the output?
Anonymous voting

JavaScript
JavaScript
31 439
CHALLENGE 
const pattern = /(?<=\d)(?=(?:\d{3})+(?!\d))/g;
const str = '1234567890';
const result = str.replace(pattern, ',');
console.log(result);

const regex = /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)[a-zA-Z\d]{8,}$/;
const tests = ['Password1', 'password', 'PASSWORD1', 'Pass1'];
tests.forEach(test => {
  console.log(`${test}: ${regex.test(test)}`);
});

const capture = /([a-z]+)(\d+)/g;
const text = 'item123 product456';
const matches = [...text.matchAll(capture)];
console.log(matches[1][1]);

JavaScript
JavaScript
31 439
🥳 IINA is a popular, open-source media player for macOS and it has just added a JavaScript-based plugin system to let users
🥳 IINA is a popular, open-source media player for macOS and it has just added a JavaScript-based plugin system to let users extend its functionality.

JavaScript
JavaScript
31 439
What is the output?
Anonymous voting

JavaScript
JavaScript
31 439
CHALLENGE 
const sym1 = Symbol('test');
const sym2 = Symbol('test');
const obj = {
  [sym1]: 'value1',
  [sym2]: 'value2',
  regular: 'value3'
};

const sym3 = Symbol.for('global');
const sym4 = Symbol.for('global');

console.log(sym1 === sym2);
console.log(sym3 === sym4);
console.log(Object.keys(obj).length);
console.log(Object.getOwnPropertySymbols(obj).length);

JavaScript
JavaScript
31 439
⛽️ Massive Supply Chain Attack Hijacks ctrl/tinycolor With 2 Million Downloads and Other 40 NPM Packages A sophisticated and
⛽️ Massive Supply Chain Attack Hijacks ctrl/tinycolor With 2 Million Downloads and Other 40 NPM Packages A sophisticated and widespread supply chain attack has struck the NPM ecosystem, compromising the popular @ctrl/tinycolor package, which is downloaded over 2 million times per week. Guru Baran

JavaScript
JavaScript
31 439
What is the output?
Anonymous voting

JavaScript
JavaScript
31 439
CHALLENGE 
const cache = new Map();

function createHandler(id) {
  const data = { id, value: new Array(1000).fill(id) };
  cache.set(id, data);
  
  return function(action) {
    if (action === 'get') return data;
    if (action === 'clear') cache.delete(id);
  };
}

const handler1 = createHandler('user-1');
const handler2 = createHandler('user-2');

handler1('clear');
console.log(cache.size);
console.log(handler1('get').id);

JavaScript
JavaScript
31 439
🤩 Fetch Streams are Great, But Not for Measuring Upload/Download Progress Fetch upload streams seem well-suited for tracking
🤩 Fetch Streams are Great, But Not for Measuring Upload/Download Progress Fetch upload streams seem well-suited for tracking the progress of uploads, but as Jake notes “just because stuff is taken from the stream doesn’t mean it’s yet been sent over the network”. He also touches on an issue relating to measuring download progress using response streams. Jake Archibald