<ul><li>Optional chaining (?.) in JavaScript allows you to safely access deeply nested object properties without throwing errors.</li><li>Before optional chaining, accessing nested properties required verbose and error-prone checks for each level of the object.</li><li>Optional chaining simplifies property access by returning undefined if any part of the chain is null or undefined, making code cleaner and safer.</li><li>Best used when working with objects that may not have all expected properties, optional chaining in JavaScript enhances code readability and maintenance.</li></ul>

Optional Chaining in JavaScript: Write Safer, Cleaner Code

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