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Post #2273
5.08K
- 👍 11
- 🤔 6
- ❤ 4
Channel Public Channel
JA JavaScript
@javascript
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Showing posts older than #2274 · Back to latest
Older Posts 20 shown
Post #2272
4.91K
CHALLENGE
const a = 9007199254740991n;
const b = 2n;
function performCalculation() {
const c = a + 1n;
const d = c / b;
const e = d * 2n - 1n;
const result = Number(e) === Number(a);
console.log(result);
}
performCalculation();
- 👍 7
Post #2271
5.04K
✌️ You Don't Know JS Yet: The Unbooks
This ~420pg ebook is a collection of all 4 remaining "unbooks" of the 2nd edition of "You Don't Know JS Yet" book series.
Kyle Simpson
This ~420pg ebook is a collection of all 4 remaining "unbooks" of the 2nd edition of "You Don't Know JS Yet" book series.
Kyle Simpson
- 👍 10
- ❤ 4
- 🔥 4
- 🤔 1
Post #2270
4.73K
- 🔥 8
- ❤ 4
- 👍 4
Post #2269
4.58K
CHALLENGE
console.log('Start');
setTimeout(() => {
console.log('Timeout 1');
}, 0);
Promise.resolve().then(() => {
console.log('Promise 1');
}).then(() => {
console.log('Promise 2');
});
setTimeout(() => {
console.log('Timeout 2');
}, 0);
console.log('End');- ❤ 4
Post #2268
4.78K
Post #2267
5.25K
- 🔥 7
- ❤ 5
- 👍 1
- 🤔 1
Post #2266
5.06K
CHALLENGE
function processConfig(config) {
const defaults = {
timeout: 1000,
retries: 3,
enabled: false,
count: 0
};
const settings = {
...defaults,
...config
};
const effectiveTimeout = settings.timeout ?? 500;
const effectiveRetries = settings.retries ?? 1;
const effectiveEnabled = settings.enabled ?? true;
const effectiveCount = settings.count ?? 5;
console.log([effectiveTimeout, effectiveRetries, effectiveEnabled, effectiveCount]);
}
processConfig({ timeout: null, retries: 0, enabled: undefined });- 👍 5
- 🤔 1
Post #2265
4.73K
Post #2264
5.24K
- ❤ 2
- 🤔 2
Post #2263
5.03K
CHALLENGE
const companies = [
{ name: 'TechCorp', founded: 2010 },
{ name: 'DataSystems', founded: 2015 },
{ name: 'WebSolutions', founded: 2008 }
];
const activeClients = new WeakSet();
activeClients.add(companies[0]);
activeClients.add(companies[2]);
companies.pop();
const result = [
activeClients.has(companies[0]),
activeClients.has(companies[1]),
typeof activeClients.size
];
console.log(result);
- ❤ 4
- 👍 1
- 🤔 1
Post #2262
4.72K
Post #2261
4.52K
- 🤔 10
- 👍 9
- ❤ 1
Post #2260
4.87K
CHALLENGE
const user = {
profile: {
name: 'Alice',
settings: {
notifications: {
email: true,
sms: false
}
}
},
getPreference(type) {
return this.profile?.settings?.notifications?.[type] ?? 'not configured';
}
};
const admin = {
profile: {
name: 'Admin',
settings: null
},
getPreference: user.getPreference
};
console.log(admin.getPreference('email'));- 👍 4
- ❤ 2
Post #2259
4.52K
- ❤ 10
- 👍 2
- 🔥 2
Post #2258
5.19K
- 👍 9
- ❤ 3
- 🔥 2
Post #2257
5.1K
CHALLENGE
const team = {
members: ['Alice', 'Bob', 'Charlie'],
[Symbol.iterator]: function*() {
let index = 0;
while(index < this.members.length) {
yield this.members[index++].toUpperCase();
}
}
};
const result = [];
for (const member of team) {
result.push(member);
}
console.log(result.join('-'));- 👍 4
Post #2256
4.9K
👍 A Flowing WebGL Gradient, Deconstructed
Even if you don’t want to render a neat plasma-style effect on the Web, this is a wonderfully deep exploration of the math and technology behind doing so using simple GLSL code that could be easily understood by any JavaScript developer.
Alex Harri
Even if you don’t want to render a neat plasma-style effect on the Web, this is a wonderfully deep exploration of the math and technology behind doing so using simple GLSL code that could be easily understood by any JavaScript developer.
Alex Harri
- ❤ 3
- 👍 2
- 🤣 2
Post #2255
4.9K
- 👍 6
- 🔥 3
- ❤ 2
Post #2254
4.99K
CHALLENGE
function main() {
console.log(1);
setTimeout(() => console.log(2), 0);
Promise.resolve().then(() => {
console.log(3);
setTimeout(() => console.log(4), 0);
}).then(() => console.log(5));
Promise.resolve().then(() => console.log(6));
console.log(7);
}
main();- ❤ 5
- 👍 2