What are the real-world applications of rest and spread operators in JavaScript?

What are the real-world applications of rest and spread operators in JavaScript?

Rest and spread operators are used to handle arrays and objects efficiently. For example, you can use the spread operator to merge arrays or clone objects.

Can you give me a specific example of using the spread operator?

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

What about the rest operator? How is it used?

The rest operator allows you to collect multiple elements into an array. For instance, in a function, you can use it like this: function myFunction(...args) { console.log(args); }.

Are there any performance considerations when using these operators?

Generally, rest and spread operators are optimized in modern JavaScript engines, but excessive use in large datasets can impact performance.