When should I use rest or spread in JavaScript?

Can you explain when to use rest and spread operators in JavaScript?

Sure! The rest operator is used to collect multiple elements into an array, while the spread operator expands an array into individual elements.

Can you give me an example of the rest operator?

Of course! For instance, in a function definition, you can use it like this: function myFunc(...args) { console.log(args); }.

And what about the spread operator?

The spread operator can be used to combine arrays or objects. For example: const newArray = [...array1, ...array2];.

Are there any performance considerations I should be aware of?

Generally, both operators are efficient, but using them excessively in large data sets can impact performance.