https://www.codeslog.com/en/tags/falsy/ Recent content in Falsy on Codeslog https://www.codeslog.com/images/default-cover.png?v=20260114T1436 https://www.codeslog.com/images/default-cover.png?v=20260114T1436 Hugo -- 0.150.0 en-US Tue, 14 Jul 2026 23:52:00 +0900 https://www.codeslog.com/en/posts/javascript-nullish-coalescing/ Tue, 14 Jul 2026 23:52:00 +0900 https://www.codeslog.com/en/posts/javascript-nullish-coalescing/ The decisive difference between the nullish coalescing operator (??) and || — it's why 0 and empty strings get swallowed by defaults. Falsy traps, ??= assignment, optional chaining combos, and why mixing the two throws a SyntaxError.