Web/JavaScript/Reference/Global objects/Array/reverse

The reverse() method reverses an array in place. The first array element becomes the last, and the last array element becomes the first.

Syntax

a.reverse()

Return value

The reversed array.

Description

The reverse method transposes the elements of the calling array object in place, mutating the array, and returning a reference to the array.

reverse is intentionally generic; this method can be called or applied to objects resembling arrays. Objects which do not contain a length property reflecting the last in a series of consecutive, zero-based numerical properties may not behave in any meaningful manner.

Examples

Reversing the elements in an array

The following example creates an array a, containing three elements, then reverses the array. The call to reverse() returns a reference to the reversed array a.

const a = [1, 2, 3];

console.log(a); // [1, 2, 3]

a.reverse(); 

console.log(a); // [3, 2, 1]

Reversing the elements in an array-like object

The following example creates an array-like object a, containing three elements and a length property, then reverses the array-like object. The call to reverse() returns a reference to the reversed array-like object a.

const a = {0: 1, 1: 2, 2: 3, length: 3};

console.log(a); // {0: 1, 1: 2, 2: 3, length: 3}

Array.prototype.reverse.call(a); //same syntax for using apply()

console.log(a); // {0: 3, 1: 2, 2: 1, length: 3}

Specifications

Specification
ECMAScript (ECMA-262)The definition of 'Array.prototype.reverse' in that specification.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
`reverse`	Chrome Full support 1	Edge Full support 12	Firefox Full support 1	IE Full support 5.5	Opera Full support 4	Safari Full support 1	WebView Android Full support 1	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 10.1	Safari iOS Full support 1	Samsung Internet Android Full support 1.0	nodejs Full support 0.1.100

Legend

Full support: Full support