Available now! Telegram Research 2025 โ the year's key insights 
JavaScript
A resourceful newsletter featuring the latest and most important news, articles, books and updates in the world of #javascript ๐ Don't miss our Quizzes! Let's chat: @nairihar
Show more๐ Analytical overview of Telegram channel JavaScript
Channel JavaScript (@javascript) in the English language segment is an active participant. Currently, the community unites 31 443 subscribers, ranking 4 382 in the Technologies & Applications category and 13 579 in the India region.
๐ Audience metrics and dynamics
Since its creation on ะฝะตะฒัะดะพะผะพ, the project has demonstrated rapid growth, gathering an audience of 31 443 subscribers.
According to the latest data from 12 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -211 over the last 30 days and by -26 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 6.22%. 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 1 955 views. Within the first day, a publication typically gains 794 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.
๐ Description and content policy
The author describes the resource as a platform for expressing subjective opinions:
โA resourceful newsletter featuring the latest and most important news, articles, books and updates in the world of #javascript ๐ Don't miss our Quizzes!
Let's chat: @nairiharโ
Thanks to the high frequency of updates (latest data received on 13 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.
const user = { name: 'Sarah', age: 28 };
const greeting = 'Hello';
const template = `${greeting}, ${user.name}! You are ${user.age} years old.`;
function createMessage(strings, ...values) {
return strings.reduce((result, string, i) => {
return result + string + (values[i] ? `[${values[i]}]` : '');
}, '');
}
const tagged = createMessage`Welcome ${user.name}, age: ${user.age}!`;
console.log(template);
console.log(tagged);
const data = '{"name":"Sarah","age":25,"skills":["JavaScript","Python"]}'
const parsed = JSON.parse(data)
const stringified = JSON.stringify(parsed, null, 0)
const reparsed = JSON.parse(stringified)
try {
const invalid = '{name:"John","incomplete":}'
JSON.parse(invalid)
} catch (e) {
console.log(e.name)
}
console.log(typeof parsed.age)
console.log(reparsed.skills.length)
console.log(JSON.stringify({a: undefined, b: null, c: 0}))
const obj = { count: 0 };
const arr = [obj, obj, obj];
function increment(item) {
item.count++;
return item;
}
const results = arr.map(increment);
console.log(obj.count);
console.log(results[0] === results[1]);
console.log(results.length);
console.log(arr[0].count);
class EventEmitter {
constructor() {
this.events = {};
}
on(event, callback) {
this.events[event] = this.events[event] || [];
this.events[event].push(callback);
return this;
}
emit(event, data) {
if (this.events[event]) {
this.events[event].forEach(cb => cb(data));
}
return this;
}
}
class Logger {
log(msg) { console.log(`[LOG]: ${msg}`); }
}
class DataProcessor {
constructor(emitter, logger) {
this.emitter = emitter;
this.logger = logger;
this.emitter.on('process', (data) => {
this.logger.log(data.toUpperCase());
});
}
process(data) {
this.emitter.emit('process', data);
}
}
const emitter = new EventEmitter();
const logger = new Logger();
const processor = new DataProcessor(emitter, logger);
processor.process('hello world');
emitter.emit('process', 'composition rocks');class CustomError extends Error {
constructor(message) {
super(message);
this.name = 'CustomError';
}
}
try {
throw new CustomError('Something went wrong');
} catch (e) {
console.log(e instanceof Error);
console.log(e instanceof CustomError);
console.log(e.constructor.name);
console.log(e.name);
}const wm = new WeakMap();
const obj1 = { name: 'first' };
const obj2 = { name: 'second' };
const obj3 = obj1;
wm.set(obj1, 'value1');
wm.set(obj2, 'value2');
wm.set(obj3, 'value3');
console.log(wm.get(obj1));
console.log(wm.get(obj2));
console.log(wm.get(obj3));
console.log(wm.has(obj1));
console.log(wm.size);function createCounter() {
let count = 0;
return {
increment: () => ++count,
decrement: () => --count,
getValue: () => count
};
}
const counter1 = createCounter();
const counter2 = createCounter();
counter1.increment();
counter1.increment();
counter2.increment();
console.log(counter1.getValue(), counter2.getValue());
counter1.decrement();
console.log(counter1.getValue(), counter2.getValue());const moduleMap = new Map();
async function loadModule(name) {
if (moduleMap.has(name)) {
return moduleMap.get(name);
}
const module = await Promise.resolve({
default: () => `Module ${name} loaded`,
version: '1.0.0'
});
moduleMap.set(name, module);
return module;
}
loadModule('auth').then(m => console.log(m.default()));
loadModule('auth').then(m => console.log(m.version));
loadModule('db').then(m => console.log(m.default()));