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 31 133 subscribers, ranking 4 183 in the Technologies & Applications category and 12 833 in the India region.
📊 Audience metrics and dynamics
Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 31 133 subscribers.
According to the latest data from 22 September, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -121 over the last 30 days and by -5 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 6.10%. Within the first 24 hours after publication, content typically collects 2.20% reactions from the total number of subscribers.
- Post reach: On average, each post receives 1 900 views. Within the first day, a publication typically gains 684 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 23 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.
let x = 5;
function foo() {
console.log(x);
let x = 10;
console.log(x);
}
foo();const teams = [
{ name: 'Warriors', players: ['Curry', 'Thompson'] },
{ name: 'Lakers', players: ['James', 'Davis'] }
];
const newTeams = JSON.parse(JSON.stringify(teams));
newTeams[0].players.push('Green');
const shallowCopy = [...teams];
shallowCopy[1].name = 'Clippers';
const freezeTest = Object.freeze({nested: {value: 42}});
freezeTest.nested.value = 100;
console.log(teams[1].name, teams[0].players.length, freezeTest.nested.value);const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
const result = numbers
.filter(n => n % 2 === 0)
.map(n => n * 2)
.reduce((acc, curr, idx, arr) => {
if (idx === arr.length - 1) {
return (acc + curr) / arr.length;
}
return acc + curr;
}, 0);
console.log(result);
const items = ['apple', 'banana', 'cherry', 'date'];
const result = items
.map(item => item.toUpperCase())
.filter(item => item.length > 5)
.reduce((acc, item, index) => {
return acc + (index === 0 ? '' : '-') + item.slice(0, 3);
}, '');
console.log(result);const cache = new WeakMap();
const user1 = { name: 'Alice' };
const user2 = { name: 'Bob' };
cache.set(user1, { lastLogin: 'yesterday' });
cache.set(user2, { lastLogin: 'today' });
const result = [];
result.push(cache.has(user1));
result.push(cache.get(user2).lastLogin);
let user3 = { name: 'Charlie' };
cache.set(user3, { lastLogin: 'now' });
result.push(cache.has(user3));
user3 = null; // Removing the reference
// Garbage collector might run here in real situations
const user4 = { name: 'Charlie' }; // Same name, different object
result.push(cache.has(user4));
console.log(result);
const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
const result = numbers
.filter(num => num % 2 === 0)
.map(num => num * 2)
.reduce((acc, curr, idx, arr) => {
if (idx === arr.length - 1) {
return (acc + curr) / arr.length;
}
return acc + curr;
}, 0);
console.log(result);
function outer() {
console.log(typeof inner);
console.log(typeof inner2);
var inner = function() {
return 'Inside inner';
};
function inner2() {
return 'Inside inner2';
}
console.log(typeof inner);
console.log(typeof inner2);
}
outer();function* counter() {
let count = 1;
while (true) {
const reset = yield count++;
if (reset) {
count = 1;
}
}
}
const gen = counter();
console.log(gen.next().value);
console.log(gen.next().value);
console.log(gen.next(true).value);
console.log(gen.next().value);