Web/JavaScript/Reference/Global objects/Array/pop

The pop() method removes the last element from an array and returns that element. This method changes the length of the array.

Syntax

arrName.pop()

Return value

The removed element from the array; undefined if the array is empty.

Description

The pop method removes the last element from an array and returns that value to the caller.

pop 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.

If you call pop() on an empty array, it returns undefined.

Array.prototype.shift() has similar behavior to pop, but applied to the first element in an array.

Examples

Removing the last element of an array

The following code creates the myFish array containing four elements, then removes its last element.

var myFish = ['angel', 'clown', 'mandarin', 'sturgeon'];

var popped = myFish.pop();

console.log(myFish); // ['angel', 'clown', 'mandarin' ] 

console.log(popped); // 'sturgeon'

Using apply( ) or call ( ) on array-like objects

The following code creates the myFish array-like object containing four elements and a length parameter, then removes its last element and decrements the length parameter.

var myFish = {0:'angel', 1:'clown', 2:'mandarin', 3:'sturgeon', length: 4};

var popped = Array.prototype.pop.call(myFish); //same syntax for using apply( )

console.log(myFish); // {0:'angel', 1:'clown', 2:'mandarin', length: 3} 

console.log(popped); // 'sturgeon'

Specifications

Specification
ECMAScript (ECMA-262)The definition of 'Array.prototype.pop' 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
`pop`	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