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Optional chaining (?.) and nullish coalescing (??) replace verbose nested null checks with one readable expression — here's how to use them well, and where they bite.
Learn how JavaScript’s optional chaining (?.) and nullish coalescing (??) operators simplify safe property access and default value handling, with a practical example and notes on browser support.
Learn how to use JavaScript's optional chaining (?.) and nullish coalescing (??) operators to safely read nested object properties and supply defaults, with a concrete example, verification steps, and trade‑offs.
javascript