How do I use the spread operator with arrays in JavaScript?

How do I use the spread operator with arrays in JavaScript?

The spread operator in JavaScript allows you to expand elements of an array. You can use it to create a new array by combining existing arrays or adding new elements.

Can you show me an example?

Sure! Here's an example: const arr1 = [1, 2, 3]; const arr2 = [4, 5, 6]; const combined = [...arr1, ...arr2]; // combined is [1, 2, 3, 4, 5, 6].

What if I want to add new elements to an existing array?

You can do that too! For example: const arr = [1, 2, 3]; const newArr = [...arr, 4, 5]; // newArr is [1, 2, 3, 4, 5].

Is the spread operator only for arrays?

No, the spread operator can also be used with objects to copy properties or merge them.