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 31 138 subscribers, ranking 4 164 in the Technologies & Applications category and 12 801 in the India region.
📊 Audience metrics and dynamics
Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 31 138 subscribers.
According to the latest data from 21 September, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -118 over the last 30 days and by -7 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 6.16%. Within the first 24 hours after publication, content typically collects 2.24% reactions from the total number of subscribers.
- Post reach: On average, each post receives 1 917 views. Within the first day, a publication typically gains 697 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 4.
- 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 22 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 original = { a: 1, b: { c: 2 } };
const shallow = { ...original };
const deep = JSON.parse(JSON.stringify(original));
shallow.a = 10;
shallow.b.c = 20;
deep.a = 100;
deep.b.c = 200;
const frozen = Object.freeze({ x: 1, y: { z: 2 } });
frozen.x = 99;
frozen.y.z = 99;
console.log(original.a, original.b.c, frozen.x, frozen.y.z);
class EventBus {
constructor() {
this.events = new Map();
}
on(event, callback) {
if (!this.events.has(event)) {
this.events.set(event, []);
}
this.events.get(event).push(callback);
}
emit(event, data) {
if (this.events.has(event)) {
this.events.get(event).forEach(callback => callback(data));
}
}
}
const bus = new EventBus();
bus.on('user', name => console.log(`Hello ${name}`));
bus.on('user', name => console.log(`Welcome ${name}`));
bus.emit('user', 'Sarah');
bus.emit('admin', 'John');
const promise1 = Promise.resolve('first');
const promise2 = new Promise(resolve => {
resolve('second');
});
const promise3 = Promise.resolve().then(() => 'third');
async function test() {
console.log('start');
const result1 = await promise1;
console.log(result1);
const result2 = await promise2;
console.log(result2);
const result3 = await promise3;
console.log(result3);
console.log('end');
}
test();function createCounter() {
let count = 0;
return {
increment: () => ++count,
decrement: () => --count,
get: () => count
};
}
const counter1 = createCounter();
const counter2 = createCounter();
counter1.increment();
counter1.increment();
counter2.increment();
console.log(counter1.get(), counter2.get());
const { increment, get } = counter1;
increment();
console.log(get());
let obj1 = { name: 'Sarah' };
let obj2 = { name: 'Mike' };
let obj3 = { ref: obj1 };
obj1.circular = obj1;
obj2.partner = obj3;
obj3.partner = obj2;
let weakMap = new WeakMap();
weakMap.set(obj1, 'data1');
weakMap.set(obj2, 'data2');
obj1 = null;
obj2 = null;
console.log(weakMap.has(obj3.ref));
console.log(obj3.partner.name);
const user = {
name: 'Sarah',
age: 25,
getName() { return this.name; },
getAge: () => this.age
};
const methods = {
regular: user.getName,
arrow: user.getAge
};
console.log(methods.regular());
console.log(methods.arrow());
console.log(user.getName());
console.log(user.getAge());
function* fibonacci() {
let [a, b] = [0, 1];
while (true) {
yield a;
[a, b] = [b, a + b];
}
}
function* takeWhile(generator, predicate) {
for (const value of generator) {
if (!predicate(value)) break;
yield value;
}
}
const fib = fibonacci();
const smallFibs = takeWhile(fib, x => x < 20);
console.log([...smallFibs].join(','));