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Stdle #34 · quirks · 2026-07-04

What does this JavaScript snippet output?

A past puzzle — fully playable. 4 attempts, hints on wrong guesses.

const o = { b: 1, 2: 2, a: 3, 1: 4 };
console.log(Object.keys(o).join(','));
Quirks
4 attempts left

Answer & explanation