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
Post #1911
7.56K
- 🤔 14
- 👍 7
- ❤ 5
- 🤣 2
Channel Public Channel
JA JavaScript
@javascript
- Subscribers
- 31K
- Photos
- 1.2K
- Videos
- 10
- Links
- 899
Showing posts older than #1912 · Back to latest
Older Posts 20 shown
Post #1910
7.76K
CHALLENGE
var obj = {
a: 10,
b: 20,
c: 'hello'
};
with (obj) {
var sum = a + b;
var greeting = c + ' world';
}
console.log(sum, greeting);- 👍 15
- 🔥 2
- 🤩 2
Post #1909
7.69K
Post #1908
8.04K
- ❤ 6
- 👍 6
- 🔥 2
- 🤩 1
Post #1907
7.78K
CHALLENGE
const numbers = [2, 4, 6, 8];
const sum = numbers.reduce((acc, num) => acc + num, 0);
console.log(sum);
- 👍 6
- 🤔 5
Post #1906
7.75K
Post #1905
8.21K
- 🤔 13
- 👍 11
- ❤ 6
Post #1904
7.66K
CHALLENGE
const symbol1 = Symbol('desc1');
const symbol2 = Symbol('desc2');
const myObject = {};
myObject[symbol1] = 'Value1';
myObject[symbol2] = 'Value2';
let output = '';
for (let key in myObject) {
output += myObject[key] + ' ';
}
output += Object.getOwnPropertySymbols(myObject).length;
console.log(output);- 👍 8
- ❤ 4
Post #1903
7.4K
Post #1902
7.53K
- 🤔 17
- 👍 7
- ❤ 2
Post #1901
7.38K
CHALLENGE ❓
class MyClass {
constructor() {
this.a = 10;
}
}
MyClass.prototype.b = 20;
const obj = new MyClass();
delete obj.b;
console.log(obj.b);
- 👍 8
- ❤ 5
Post #1900
7.69K
👍 Linkify 4.2: Link Up URLs, Emails, and More in Plain Text
Given plain text containing things like links, hashtags, IP addresses, and email addresses, this will generate the correct code to display it on the Web.
Hypercontext
Given plain text containing things like links, hashtags, IP addresses, and email addresses, this will generate the correct code to display it on the Web.
Hypercontext
- ❤ 3
- 👍 3
- 🔥 2
Post #1899
7.43K
- ❤ 12
- 👍 7
- 🔥 1
- 🤣 1
Post #1898
7.07K
CHALLENGE ❓
const map = new Map();
map.set("key", undefined);
console.log(map.has("key"), map.get("key"));
- 👍 7
Post #1897
7.38K
Post #1896
7.31K
- 👍 17
- ❤ 7
- 🔥 3
- 🤔 1
Post #1895
7.05K
CHALLENGE ❓
const obj = {
0: "zero",
1: "one",
length: 2
};
console.log(Array.from(obj));- 👍 4
- ❤ 1
- 🤔 1
Post #1894
7.32K
⚡️ test262.fyi presents an interesting technical view of how different JavaScript engines fare on the official ECMAScript conformance test suite.
- ❤ 3
- 👍 3
- 🔥 3
Post #1893
7.25K
- 🤔 19
- 👍 13
- ❤ 5
- 🔥 2
Post #1892
6.82K
CHALLENGE ❓
function foo() {}
foo.prototype.bar = 42;
const obj = new foo();
foo.prototype = { bar: 100 };
console.log(obj.bar);
- 👍 7
- ❤ 1