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 31 135 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 31 135 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 compose = (...fns) => x => fns.reduceRight((acc, fn) => fn(acc), x);
const addTwo = num => num + 2;
const multiplyByThree = num => num * 3;
const subtractTen = num => num - 10;
const calculate = compose(subtractTen, multiplyByThree, addTwo);
console.log(calculate(5));
function mystery() {
try {
console.log('A');
throw new Error('Oops');
console.log('B');
} catch (err) {
console.log('C');
return 'D';
} finally {
console.log('E');
return 'F';
}
console.log('G');
return 'H';
}
console.log(mystery());
const users = [
{ id: 1, name: 'Sarah' },
{ id: 2, name: 'Miguel' },
{ id: 3, name: 'Jordan' }
];
const activeUsers = new WeakSet();
activeUsers.add(users[0]);
activeUsers.add(users[2]);
users.splice(1, 1); // Remove Miguel
let count = 0;
for (const user of users) {
if (activeUsers.has(user)) count++;
}
console.log(count);
function createCounter() {
let count = 0;
return {
increment() {
return ++count;
},
reset() {
const oldCount = count;
count = 0;
return oldCount;
}
};
}
const counterA = createCounter();
const counterB = createCounter();
counterA.increment();
counterA.increment();
counterB.increment();
const result = counterA.reset() + counterB.reset();
console.log(result);const memoryLeak = () => {
const cache = new Map();
const weakCache = new WeakMap();
const objKey = { id: 123 };
const data = { name: 'User data', value: 42 };
cache.set(objKey, data);
weakCache.set(objKey, data);
// Simulate removing reference to key
const result = { map: cache.has(objKey), weakMap: weakCache.has(objKey) };
// objKey = null; // This would be an error, as const can't be reassigned
return result;
};
console.log(memoryLeak());
function createCounter() {
let count = 0;
function increment() {
count += 1;
return count;
}
function decrement() {
count -= 1;
return count;
}
return { increment, decrement, value: () => count };
}
const counter = createCounter();
counter.increment();
counter.increment();
counter.decrement();
console.log(counter.value() + counter.increment());const obj = {
name: 'Taylor',
greet() {
return `Hello, ${this.name}!`;
},
delayedGreet() {
setTimeout(function() {
console.log(this.greet());
}, 100);
}
};
obj.delayedGreet();function* rangeGenerator(start, end, step = 1) {
let current = start;
while (current <= end) {
yield current;
current += step;
}
}
const numbers = rangeGenerator(1, 10, 2);
numbers.next();
numbers.next();
const values = [...numbers];
console.log(values);