Spread & Merge Objects

The spread operator (...) creates copies and merges objects/arrays. It's essential for immutable data transformations.

Copying Objects

Adding Properties

Overriding Properties

Merging Arrays

Updating Nested Objects

Spread in Function Calls

Exercise: Add Property

Exercise: Merge Objects

Exercise: Combine Arrays

Key Points

• {...obj} creates shallow copy
• Later properties override earlier ones
• [...arr] copies arrays
• Spread enables immutable updates
• Remember: shallow copy only!