JS Practice — Built-in Objects

Object.assign() — shallow clone

📖 Usage Example

// Merge source into target
const target = { a: 1 }
Object.assign(target, { b: 2 })   // → { a: 1, b: 2 }

Use Object.assign() to copy properties from one or more source objects into a target object.

Object.assign() for shallow cloning

Passing an empty object {} as the target with one source is a common way to create a shallow clone of an object.

Challenge: Implement shallowClone(obj) that returns a shallow copy of obj using Object.assign.

const orig = { a: 1, b: 2 }
const copy = shallowClone(orig)
copy === orig // → false
copy          // → { a: 1, b: 2 }

💡 Hints (2)