Web Reference: Jan 12, 2026 · Optional Chaining (ES2020) safely accesses properties or calls functions on null or undefined values. Safely accesses nested properties without runtime errors. Eliminates the need for explicit null or undefined checks. Improves code readability and cleanliness. Jul 8, 2025 · The optional chaining (?.) operator accesses an object's property or calls a function. If the object accessed or function called using this operator is undefined or null, the expression short circuits and evaluates to undefined instead of throwing an error. Feb 13, 2024 · Enter optional chaining—a game-changer in modern JavaScript syntax. In this article, we'll explore optional chaining through practical examples, demonstrating how it streamlines code and makes development more efficient.
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