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

Post CHALLENGE

16 September 2026

JavaScript

CHALLENGE let count = 0; const inc = () => (count += 1, count); const a = 0 || inc(); const b = null ?? inc(); const c = a && inc(); const d = b?.toString() || inc(); console.log(a, b, c, d, count);

1 · 2.1K · 06:30

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JavaScript06:31CHALLENGE const a = [] + []; const b = [] + {}; const c = {} + []; const d = 1 + "1" - 1; console.log(a, b, c, d);J

JavaScript06:31Poll

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JavaScript06:30Poll J

JavaScript06:31CHALLENGE const nums = [1, 2, 3, 4, 5]; const result = nums .filter(n => n % 2 !== 0) .map(n => n ** 2) .reduce((acc, n) => acc + n, 0); const arr = [10, , 20,

JavaScript@javascript · channel · Tech

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