Cloning an Object in JavaScript

Cloning an object means creating a copy of an object so that changes to the new object do not affect the original object and vice versa. There are several ways to clone an object in JavaScript, each with its own advantages and use cases.

1. Shallow Copy Using Object.assign()

2. Shallow Copy Using Spread Operator

3. Deep Copy Using JSON.parse() and JSON.stringify()

4. Deep Copy Using a Recursive Function

5. Deep Copy Using Lodash's _.cloneDeep()

Summary

• Shallow Copy: Object.assign(), Spread Operator (...)
  • Only copies the top-level properties, nested objects are referenced.
• Deep Copy: JSON.parse(JSON.stringify()), Recursive Function, Lodash's _.cloneDeep()
  • Copies both top-level and nested properties, creating completely independent objects.

The method to use depends on the complexity of your object and whether you need a shallow or deep copy.

Shallow Copy

Deep Copy