What are the performance differences between destructuring and spread operators in JavaScript?

What are the performance differences between destructuring and spread operators in JavaScript?

Destructuring and spread operators serve different purposes, but their performance can vary based on usage. Destructuring is generally faster for extracting values from arrays or objects, while spread can be slower due to creating new arrays or objects.

Can you give me an example of each?

Sure! For destructuring, you might have: const {a, b} = obj; which quickly extracts a and b from obj. For spread, you could use: const newArray = [...oldArray]; which creates a new array by copying elements from oldArray.

Are there any scenarios where one is preferred over the other?

Yes, if you need to extract specific values, destructuring is preferred for its clarity and speed. If you need to combine or clone objects/arrays, spread is the way to go.

What about memory usage? Is one more efficient?

Destructuring typically uses less memory since it doesn't create new objects or arrays. Spread, on the other hand, can increase memory usage due to the creation of new instances.