JavaScript
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
Show more📈 Analytical overview of Telegram channel JavaScript
Channel JavaScript (@javascript) in the English language segment is an active participant. Currently, the community unites 31 169 subscribers, ranking 4 162 in the Technologies & Applications category and 12 802 in the India region.
📊 Audience metrics and dynamics
Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 31 169 subscribers.
According to the latest data from 16 September, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -150 over the last 30 days and by -1 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 6.13%. Within the first 24 hours after publication, content typically collects 2.29% reactions from the total number of subscribers.
- Post reach: On average, each post receives 1 911 views. Within the first day, a publication typically gains 715 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 5.
- 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 17 September, 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 compose = (...fns) => x => fns.reduceRight((acc, fn) => fn(acc), x);
const pipe = (...fns) => x => fns.reduce((acc, fn) => fn(acc), x);
const inc = x => x + 1;
const double = x => x * 2;
const square = x => x * x;
const f = compose(square, double, inc);
const g = pipe(square, double, inc);
console.log(f(2), g(2));function* inner() {
yield 1;
yield 2;
return 'inner-done';
}
function* outer() {
const result = yield* inner();
yield result;
yield 3;
}
const gen = outer();
const results = [];
let r = gen.next();
while (!r.done) {
results.push(r.value);
r = gen.next();
}
console.log(results.join(','));
export {};class Base {}
class Derived extends Base {
static [Symbol.hasInstance](instance) {
return false;
}
}
const d = new Derived();
console.log(d instanceof Derived, d instanceof Base, Object.getPrototypeOf(Derived) === Base);function makeFns() {
const result = [];
for (var i = 0; i < 3; i++) {
let j = i;
result.push(() => i + j);
}
return result;
}
const fns = makeFns();
console.log(fns.map(f => f()).join(','));const arr = [1, [2, 3], { a: 4 }];
const copy = [...arr];
copy[1].push(99);
copy[2].a = 100;
arr[0] = 999;
console.log(arr[0], arr[1], arr[2].a, copy[0]);const a = Math.max();
const b = Math.min();
const c = 0.1 + 0.2 === 0.3;
const d = Math.max(1, NaN, 3);
const e = [1, 2, 3].reduce((sum, n) => sum + n, 0) / 3;
const f = Number.isInteger(5.0);
console.log(a, b, c, d, e, f);function makeCounters() {
const counters = [];
for (var i = 0; i < 3; i++) {
let j = i;
counters.push(() => `${i}-${j}`);
}
return counters;
}
const [a, b, c] = makeCounters();
console.log(a(), b(), c());
export {};class EventBus {
#listeners = new Map();
on(event, fn) {
if (!this.#listeners.has(event)) this.#listeners.set(event, new Set());
this.#listeners.get(event).add(fn);
return () => this.#listeners.get(event).delete(fn);
}
emit(event, payload) {
this.#listeners.get(event)?.forEach(fn => fn(payload));
}
}
const bus = new EventBus();
const log = [];
const unsub = bus.on('data', v => log.push(`A:${v}`));
bus.on('data', v => log.push(`B:${v}`));
bus.emit('data', 1);
unsub();
bus.on('data', v => log.push(`C:${v}`));
bus.emit('data', 2);
console.log(log.join(','));function Person(name) {
if (!(this instanceof Person)) {
return new Person(name);
}
this.name = name;
}
Person.prototype.greet = function () {
return `Hi ${this.name}`;
};
function Widget(id) {
this.id = id;
return { id: id * 2 };
}
Widget.prototype.getId = function () {
return this.id;
};
const p1 = Person('Zed');
const p2 = new Person('Nova');
const w = new Widget(5);
console.log(p1.greet(), p2.greet(), w.id, w.getId);
const log = [];
Promise.resolve(1)
.then(v => { log.push('a'+v); return v+1; })
.then(v => { throw new Error('e'+v); })
.catch(e => { log.push(e.message); return 10; })
.then(v => { log.push('b'+v); });
Promise.resolve()
.then(() => log.push('c'))
.then(() => log.push('d'));
setTimeout(() => console.log(log.join(',')), 0);