What are some use cases for the object spread operator in JavaScript?

What are some use cases for the object spread operator in JavaScript?

The object spread operator allows you to easily copy properties from one object to another. Some common use cases include merging objects, creating shallow copies, and adding new properties to existing objects.

Can you give me an example of merging two objects using the spread operator?

Sure! You can merge two objects like this: const merged = {...obj1, ...obj2}; This creates a new object that contains all properties from both obj1 and obj2.

What about creating a shallow copy of an object?

You can create a shallow copy using the spread operator like this: const copy = {...originalObject};. This will copy all properties from originalObject into copy.

Are there any performance considerations I should be aware of?

Yes, while the spread operator is convenient, it creates a shallow copy, which can lead to performance issues with large objects or deep nested structures. Always consider the size and complexity of the objects you're working with.