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 31 128 subscribers, ranking 4 191 in the Technologies & Applications category and 12 832 in the India region.
📊 Audience metrics and dynamics
Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 31 128 subscribers.
According to the latest data from 23 September, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -115 over the last 30 days and by 9 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 6.08%. Within the first 24 hours after publication, content typically collects 2.12% reactions from the total number of subscribers.
- Post reach: On average, each post receives 1 894 views. Within the first day, a publication typically gains 659 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 24 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.
function getCity(person) {
return person?.address?.city ?? 'Unknown';
}
const data = [
null,
{ name: 'Alice' },
{ name: 'Bob', address: null },
{ name: 'Charlie', address: { street: '123 Main' } },
{ name: 'David', address: { city: 'Boston' } }
];
const cities = data.map(getCity);
console.log(cities);
async function test() {
console.log('1');
setTimeout(() => {
console.log('2');
}, 0);
await Promise.resolve();
console.log('3');
new Promise(resolve => {
console.log('4');
resolve();
}).then(() => {
console.log('5');
});
console.log('6');
}
test();
console.log('7');
const secretData = { password: 'abc123' };
const mySet = new WeakSet();
mySet.add(secretData);
// Later in the code
delete secretData.password;
const checkAccess = (obj) => {
console.log(mySet.has(obj));
};
checkAccess(secretData);
checkAccess({ password: 'abc123' });
let obj1 = { id: 1 };
let obj2 = { id: 2 };
let obj3 = { id: 3 };
const weakSet = new WeakSet([obj1, obj2]);
weakSet.add(obj3);
weakSet.delete(obj1);
obj2 = null;
const remainingObjects = [...weakSet];
console.log(remainingObjects);
function Device(name) {
this.name = name;
this.isOn = false;
}
Device.prototype.turnOn = function() {
this.isOn = true;
return `${this.name} is now on`;
};
function Smartphone(name, model) {
Device.call(this, name);
this.model = model;
}
Smartphone.prototype = Object.create(Device.prototype);
Smartphone.prototype.constructor = Smartphone;
Smartphone.prototype.turnOn = function() {
const result = Device.prototype.turnOn.call(this);
return `${result} (model: ${this.model})`;
};
const myPhone = new Smartphone('iPhone', '13 Pro');
console.log(myPhone.turnOn());
class ShoppingCart {
constructor() {
if (ShoppingCart.instance) {
return ShoppingCart.instance;
}
this.items = [];
ShoppingCart.instance = this;
}
addItem(item) {
this.items.push(item);
}
getItems() {
return [...this.items];
}
}
const cart1 = new ShoppingCart();
const cart2 = new ShoppingCart();
cart1.addItem('Book');
cart2.addItem('Laptop');
console.log(cart1.getItems());
function processInput(userInput) {
const defaultValue = 'default';
const value1 = userInput?.value ?? defaultValue;
const value2 = userInput?.value || defaultValue;
const result = {
a: 0 ?? 'zero',
b: '' ?? 'empty',
c: null ?? 'null',
d: undefined ?? 'undefined',
comparison: value1 === value2
};
console.log(result);
}
processInput({ value: '' });