Web/JavaScript/Reference/Global objects/Array/of

The Array.of() method creates a new Array instance from 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 of 7 empty slots
Array(1, 2, 3);    // [1, 2, 3]

Syntax

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

Parameters

elementN: Elements used to create the array.

Return value

A new Array instance.

Description

This function is part of the ECMAScript 2015 standard.

For more information, see:

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);
    // Or 
    let vals = [];
    for(let prop in arguments){
        vals.push(arguments[prop]);
    }
    return vals;
  }
}

Examples

Using Array.of

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

Specifications

Specification
ECMAScript (ECMA-262)The definition of 'Array.of' 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
`of`	Chrome Full support 45	Edge Full support 12	Firefox Full support 25	IE No support No	Opera Full support 26	Safari Full support 9	WebView Android Full support 39	Chrome Android Full support 39	Firefox Android Full support 25	Opera Android Full support 26	Safari iOS Full support 9	Samsung Internet Android Full support 4.0	nodejs Full support 4.0.0

Legend

Full support: Full support
No support: No support