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Deep Cloning with JSON - Arrays & Objects Together | JavaScript | Repovive

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JavaScript22 sections · 783 units18h total

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Deep Cloning with JSON

Copy nested structures

A quick way to deep clone is stringify then parse. This creates completely independent copies of nested structures.

const original = { a: { b: 1 } };
const clone = JSON.parse(JSON.stringify(original));
clone.a.b = 99;
console.log(original.a.b); // 1 (unchanged)

Note: This doesn't work with functions, undefined, or circular references.