MDN’s new design is in Beta! A sneak peek: https://blog.mozilla.org/opendesign/mdns-new-design-beta/

The Array.of() method creates a new Array instance with a variable number of arguments, regardless of number or type of the arguments.

The difference between Array.of() and the Array constructor is in the handling of integer arguments: Array.of(7) creates an array with a single element, 7, whereas Array(7) creates an empty array with a length property of 7 (Note: this implies an array of 7 empty slots, not slots with actual undefined values).

Array.of(7);       // [7] 
Array.of(1, 2, 3); // [1, 2, 3]

Array(7);          // [ , , , , , , ]
Array(1, 2, 3);    // [1, 2, 3]

Syntax

Array.of(element0[, element1[, ...[, elementN]]])

Parameters

elementN
Elements of which to create the array.

Return value

A new Array instance.

Description

This function is part of the ECMAScript 2015 standard. For more information see Array.of and Array.from proposal and Array.of polyfill.

Examples

Array.of(1);         // [1]
Array.of(1, 2, 3);   // [1, 2, 3]
Array.of(undefined); // [undefined]

Polyfill

Running the following code before any other code will create Array.of() if it's not natively available.

if (!Array.of) {
  Array.of = function() {
    return Array.prototype.slice.call(arguments);
  };
}

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Array.of' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Array.of' in that specification.
Draft  

Browser compatibility

Feature Chrome Firefox (Gecko) Edge Internet Explorer Opera Safari
Basic support 45 25 (25) (Yes) No support No support 9.0
Feature Android Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support 39 (Yes) 25.0 (25) No support No support No support

See also

Document Tags and Contributors

 Last updated by: GreenJello,