What are the best practices for using spread and rest operators in JavaScript?

What are the best practices for using spread and rest operators in JavaScript?

The spread operator (...) is great for expanding arrays or objects, while the rest operator is useful for collecting arguments. Best practices include using them for cleaner code, avoiding mutation, and ensuring readability.

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

Sure! You can use the spread operator to merge two arrays like this: const combined = [...array1, ...array2];.

What about the rest operator? How is it used?

The rest operator collects all remaining arguments into an array. For example: function myFunction(...args) { console.log(args); } will log all arguments passed to myFunction as an array.

Are there any performance considerations I should be aware of?

Yes, while both operators are very useful, excessive use can lead to performance issues, especially with large datasets. It's best to use them judiciously.