JS Practice — Built-in Objects

Object.assign() — merge two objects

📖 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()

Object.assign(target, ...sources) copies enumerable own properties from source objects into the target and returns the modified target.

Challenge: Implement mergeObjects(target, source) that merges source into target using Object.assign.

mergeObjects({ a: 1 }, { b: 2 }) // → { a: 1, b: 2 }

💡 Hints (2)