Available now! Telegram Research 2025 β 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 π Don't miss our Quizzes! Let's chat: @nairihar
Show moreπ Analytical overview of Telegram channel JavaScript
Channel JavaScript (@javascript) in the English language segment is an active participant. Currently, the community unites 31 447 subscribers, ranking 4 383 in the Technologies & Applications category and 13 548 in the India region.
π Audience metrics and dynamics
Since its creation on Π½Π΅Π²ΡΠ΄ΠΎΠΌΠΎ, the project has demonstrated rapid growth, gathering an audience of 31 447 subscribers.
According to the latest data from 14 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -198 over the last 30 days and by -14 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 6.27%. Within the first 24 hours after publication, content typically collects 2.55% reactions from the total number of subscribers.
- Post reach: On average, each post receives 1 972 views. Within the first day, a publication typically gains 800 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.
π Description and content policy
The author describes the resource as a platform for expressing subjective opinions:
βA resourceful newsletter featuring the latest and most important news, articles, books and updates in the world of #javascript π Don't miss our Quizzes!
Let's chat: @nairiharβ
Thanks to the high frequency of updates (latest data received on 15 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.
function mystery() {
try {
throw new Error('Oops');
return 'A';
} catch (err) {
return 'B';
} finally {
return 'C';
}
}
function wrapper() {
try {
return mystery();
} finally {
console.log('D');
}
}
console.log(wrapper());
const user = { id: 1, name: 'Alice' };
const userData = new WeakMap();
userData.set(user, { lastLogin: '2023-01-01' });
const clone = { ...user };
const originalData = userData.get(user);
const cloneData = userData.get(clone);
console.log(originalData, cloneData);
function analyze(...items) {
const [first, ...rest] = items;
const { length } = [...rest, 'bonus'];
const result = {
...first,
count: length,
};
console.log(result);
}
analyze({ id: 42, name: 'Item' }, 'a', 'b');
const target = { a: 1, b: 2 };
const handler = {
get(obj, prop) {
return prop in obj ? obj[prop] * 2 : 'Not found';
}
};
const proxy = new Proxy(target, handler);
// Add property to original object
target.c = 3;
// Modify existing property directly on proxy
proxy.a = 10;
// Use Reflect.get instead of direct property access
const result = Reflect.get(proxy, 'd', { custom: true });
console.log(proxy.a, proxy.b, proxy.c, result);
try {
const arr = [1, 2, 3];
function processArray() {
try {
nonExistentFunction();
} catch (err) {
throw new TypeError('Invalid type');
}
}
try {
processArray();
} catch (err) {
console.log(err instanceof Error, err instanceof TypeError, err.message);
}
} catch (finalError) {
console.log('Caught in outer block:', finalError);
}
const result = (function() {
let count = 0;
return {
increment() {
return ++count;
},
get value() {
return count;
},
reset() {
const oldCount = count;
count = 0;
return oldCount;
}
};
})();
result.increment();
result.increment();
console.log(result.reset() + result.value + result.increment());function modify(obj) {
obj.a.push(4);
obj.b = 'changed';
return obj;
}
const original = { a: [1, 2, 3], b: 'original', c: { deep: true } };
const copy1 = { ...original };
const copy2 = JSON.parse(JSON.stringify(original));
modify(copy1);
console.log(original.a, original.b, copy2.c === original.c);