How to reverse an array in JavaScript?

When working with arrays in JavaScript, it is often necessary to modify their order to suit specific requirements. One such requirement may be rearranging the elements of an array in the opposite order. By the end of this article, you will have a solid understanding of how to reverse an array in JavaScript and be equipped with the knowledge to implement it in your own projects.

How to reverse an array in JavaScript?

The best solution to reverse an array in JavaScript is to use Array.reverse() method which is built-in Array.prototype object (that means it is available by default, without installing any additional dependencies).

const array = [1, 2, 3, 4];

array.reverse();

The method used above is rearranging the elements of an array in the opposite order.

How to reverse an array without the use of Array.reverse() method?

If for some reason you can’t or don’t want to use Array.reverse() method, you can change the order of an array in a different way. For this task, you can use for loop to go through an array and manually rearrange the elements.

const array = [1, 2, 3, 4];
const reversedArray = [];

for (let i = array.length - 1; i >= 0; i--) {
	reversedArray.push(array[i]);
}

Now, you are able to reverse an array in JavaScript, not only with the use of Array.reverse() method but also without it. If you are interested in Arrays in JavaScript you can check also our article about how to find common elements in two arrays in JavaScript.