JavaScript@javascript · channel · 30 984 subscribers✅ High trust

Post CHALLENGE

12 October 2026

JavaScript

CHALLENGE const arr = [1, [2, 3], [4, [5, 6]]]; const a = arr.flat(); const b = arr.flat(Infinity); const c = arr.flatMap(x => Array.isArray(x) ? x : [x, x]); console.log(a, b, c);

533 · 06:32

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JavaScript06:31CHALLENGE const output = []; output.push(typeof foo); try { output.push(typeof bar); } catch (e) { output.push(e.message); } var foo = () => 'foo'; let bar = ()J

JavaScript06:31Poll

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JavaScript06:32Poll J

JavaScript06:34CHALLENGE function* inner() { const x = yield 1; yield x + 1; return 100; } function* outer() { const result = yield* inner(); yield result; } const g = outer()

JavaScript@javascript · channel · Tech

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