Can you use recursion for deep cloning objects in JavaScript?
Yes. function deepClone(obj) { if (typeof obj !== 'object') return obj; const clone = Array.isArray(obj) ? [] : {}; for (const key in obj) clone[key] = deepClone(obj[key]); return clone; }. Handle arrays, objects, and primitives. Use structuredClone() in modern JS.
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More FAQs in Recursion: Real-World Applications in JavaScript
JSON tree rendering (recurse on values), file explorer (recurse on children), nested comments (recurse on replies), deep clone (recurse on object properties), and DOM traversal (recurse on childNodes). Any nested or self-similar structure.
function deepClone(obj) { if (obj === null || typeof obj !== 'object') return obj; const clone = Array.isArray(obj) ? [] : {}; Object.keys(obj).forEach(key => clone[key] = deepClone(obj[key])); return clone; }
function renderComment(comment, depth) { /* render comment */ comment.replies.forEach(reply => renderComment(reply, depth + 1)); }. Each comment recurses into its replies, indenting by depth.
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