Web/JavaScript/Reference/Global objects/TypedArray

A TypedArray object describes an array-like view of an underlying binary data buffer. There is no global property named TypedArray, nor is there a directly visible TypedArray constructor. Instead, there are a number of different global properties, whose values are typed array constructors for specific element types, listed below. On the following pages you will find common properties and methods that can be used with any typed array containing elements of any type.

Description

ECMAScript 2015 defines a TypedArray constructor that serves as the Web/JavaScript/Reference/Global objects/Prototype of all TypedArray constructors. This constructor is not directly exposed: there is no global %TypedArray% or TypedArray property. It is only directly accessible through Object.getPrototypeOf(Int8Array) and similar. All TypedArrays constructors inherit common properties from the %TypedArray% constructor function. Additionally, all typed array prototypes (TypedArray.prototype) have %TypedArray%.prototype as their Web/JavaScript/Reference/Global objects/Prototype.

The %TypedArray% constructor on its own is not particularly useful. Calling it or using it in a new expression will throw a TypeError, except when used during object creation in JS engines that support subclassing. There are at present no such engines, so %TypedArray% is only useful to polyfill functions or properties onto all TypedArray constructors.

When creating an instance of a TypedArray (e.g. Int8Array), an array buffer is created internally in memory or, if an ArrayBuffer object is given as constructor argument, then this is used instead. The buffer address is saved as an internal property of the instance and all the methods of %TypedArray%.prototype, i.e. set value and get value etc., operate on that array buffer address.

TypedArray objects

Type	Value Range	Size in bytes	Description	Web IDL type	Equivalent C type
`Int8Array`	`-128` to `127`	1	8-bit two's complement signed integer	`byte`	`int8_t`
`Uint8Array`	`0` to `255`	1	8-bit unsigned integer	`octet`	`uint8_t`
`Uint8ClampedArray`	`0` to `255`	1	8-bit unsigned integer (clamped)	`octet`	`uint8_t`
`Int16Array`	`-32768` to `32767`	2	16-bit two's complement signed integer	`short`	`int16_t`
`Uint16Array`	`0` to `65535`	2	16-bit unsigned integer	`unsigned short`	`uint16_t`
`Int32Array`	`-2147483648` to `2147483647`	4	32-bit two's complement signed integer	`long`	`int32_t`
`Uint32Array`	`0` to `4294967295`	4	32-bit unsigned integer	`unsigned long`	`uint32_t`
`Float32Array`	`1.2`×`10-38` to `3.4`×`1038`	4	32-bit IEEE floating point number (7 significant digits e.g., `1.234567`)	`unrestricted float`	`float`
`Float64Array`	`5.0`×`10-324` to `1.8`×`10308`	8	64-bit IEEE floating point number (16 significant digits e.g., `1.23456789012345`)	`unrestricted double`	`double`
`BigInt64Array`	`-263` to `263-1`	8	64-bit two's complement signed integer	`bigint`	`int64_t (signed long long)`
`BigUint64Array`	`0` to `264-1`	8	64-bit unsigned integer	`bigint`	`uint64_t (unsigned long long)`

Constructor

This object cannot be instantiated directly. Instead, you create an instance of an array of a particular type, such as a Int8Array or a BigInt64Array. These objects all have a common syntax for their constructors:

new TypedArray();
new TypedArray(length);
new TypedArray(typedArray);
new TypedArray(object);
new TypedArray(buffer [, byteOffset [, length]]);

Where TypedArray is a constructor for one of the concrete types.

Parameters

length: When called with a length argument, an internal array buffer is created in memory, of size length multiplied by BYTES_PER_ELEMENT bytes, containing zeros.
typedArray: When called with a typedArray argument, which can be an object of any of the typed array types (such as Int32Array), the typedArray gets copied into a new typed array. Each value in typedArray is converted to the corresponding type of the constructor before being copied into the new array. The length of the new typed array will be same as the length of the typedArray argument.
object: When called with an object argument, a new typed array is created as if by the TypedArray.from() method.
buffer, byteOffset, length: When called with a buffer, and optionally a byteOffset and a length argument, a new typed array view is created that views the specified ArrayBuffer. The byteOffset and length parameters specify the memory range that will be exposed by the typed array view. If both are omitted, all of buffer is viewed; if only length is omitted, the remainder of buffer is viewed.

Static properties

TypedArray.BYTES_PER_ELEMENT: Returns a number value of the element size for the different TypedArray objects.
TypedArray.name: Returns the string value of the constructor name (e.g, "Int8Array").
get TypedArray[@@species]: The constructor function used to create derived objects.
TypedArray.prototype: Prototype for TypedArray objects.

Static methods

TypedArray.from(): Creates a new TypedArray from an array-like or iterable object. See also Array.from().
TypedArray.of(): Creates a new TypedArray with a variable number of arguments. See also Array.of().

Instance properties

TypedArray.prototype.buffer: Returns the ArrayBuffer referenced by the typed array. Fixed at construction time and thus read only.
TypedArray.prototype.byteLength: Returns the length (in bytes) of the typed array. Fixed at construction time and thus read only.
TypedArray.prototype.byteOffset: Returns the offset (in bytes) of the typed array from the start of its ArrayBuffer. Fixed at construction time and thus read only.
TypedArray.prototype.length: Returns the number of elements held in the typed array. Fixed at construction time and thus read only.

Instance methods

TypedArray.prototype.copyWithin(): Copies a sequence of array elements within the array. See also Array.prototype.copyWithin().
TypedArray.prototype.entries(): Returns a new array iterator object that contains the key/value pairs for each index in the array. See also Array.prototype.entries().
TypedArray.prototype.every(): Tests whether all elements in the array pass the test provided by a function. See also Array.prototype.every().
TypedArray.prototype.fill(): Fills all the elements of an array from a start index to an end index with a static value. See also Array.prototype.fill().
TypedArray.prototype.filter(): Creates a new array with all of the elements of this array for which the provided filtering function returns true. See also Array.prototype.filter().
TypedArray.prototype.find(): Returns the found value in the array, if an element in the array satisfies the provided testing function, or undefined if not found. See also Array.prototype.find().
TypedArray.prototype.findIndex(): Returns the found index in the array, if an element in the array satisfies the provided testing function or -1 if not found. See also Array.prototype.findIndex().
TypedArray.prototype.forEach(): Calls a function for each element in the array. See also Array.prototype.forEach().
TypedArray.prototype.includes(): Determines whether a typed array includes a certain element, returning true or false as appropriate. See also Array.prototype.includes().
TypedArray.prototype.indexOf(): Returns the first (least) index of an element within the array equal to the specified value, or -1 if none is found. See also Array.prototype.indexOf().
TypedArray.prototype.join(): Joins all elements of an array into a string. See also Array.prototype.join().
TypedArray.prototype.keys(): Returns a new array iterator that contains the keys for each index in the array. See also Array.prototype.keys().
TypedArray.prototype.lastIndexOf(): Returns the last (greatest) index of an element within the array equal to the specified value, or -1 if none is found. See also Array.prototype.lastIndexOf().
TypedArray.prototype.map(): Creates a new array with the results of calling a provided function on every element in this array. See also Array.prototype.map().
TypedArray.prototype.reduce(): Apply a function against an accumulator and each value of the array (from left-to-right) as to reduce it to a single value. See also Array.prototype.reduce().
TypedArray.prototype.reduceRight(): Apply a function against an accumulator and each value of the array (from right-to-left) as to reduce it to a single value. See also Array.prototype.reduceRight().
TypedArray.prototype.reverse(): Reverses the order of the elements of an array — the first becomes the last, and the last becomes the first. See also Array.prototype.reverse().
TypedArray.prototype.set(): Stores multiple values in the typed array, reading input values from a specified array.
TypedArray.prototype.slice(): Extracts a section of an array and returns a new array. See also Array.prototype.slice().
TypedArray.prototype.some(): Returns true if at least one element in this array satisfies the provided testing function. See also Array.prototype.some().
TypedArray.prototype.sort(): Sorts the elements of an array in place and returns the array. See also Array.prototype.sort().
TypedArray.prototype.subarray(): Returns a new TypedArray from the given start and end element index.
TypedArray.prototype.values(): Returns a new array iterator object that contains the values for each index in the array. See also Array.prototype.values().
TypedArray.prototype.toLocaleString(): Returns a localized string representing the array and its elements. See also Array.prototype.toLocaleString().
TypedArray.prototype.toString(): Returns a string representing the array and its elements. See also Array.prototype.toString().
TypedArray.prototype[@@iterator](): Returns a new array iterator object that contains the values for each index in the array.

Examples

New is required

Starting with ECMAScript 2015, TypedArray constructors must be constructed with the new operator. Calling a TypedArray constructor as a function without new will throw a TypeError.

var dv = Int8Array([1, 2, 3]);
// TypeError: calling a builtin Int8Array constructor 
// without new is forbidden

var dv = new Int8Array([1, 2, 3]);

Property access

You can reference elements in the array using standard array index syntax (that is, using bracket notation). However, getting or setting indexed properties on typed arrays will not search in the prototype chain for this property, even when the indices are out of bound. Indexed properties will consult the ArrayBuffer and will never look at object properties. You can still use named properties, just like with all objects.

// Setting and getting using standard array syntax
var int16 = new Int16Array(2);
int16[0] = 42;
console.log(int16[0]); // 42

// Indexed properties on prototypes are not consulted (Fx 25)
Int8Array.prototype[20] = 'foo';
(new Int8Array(32))[20]; // 0
// even when out of bound
Int8Array.prototype[20] = 'foo';
(new Int8Array(8))[20]; // undefined
// or with negative integers
Int8Array.prototype[-1] = 'foo';
(new Int8Array(8))[-1]; // undefined

// Named properties are allowed, though (Fx 30)
Int8Array.prototype.foo = 'bar';
(new Int8Array(32)).foo; // "bar"

Specifications

Specification
ECMAScript (ECMA-262)The definition of 'TypedArray Objects' 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
`TypedArray`	Chrome Full support 7	Edge Full support 12	Firefox Full support 4	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support 4	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 12	Safari iOS Full support 4.2	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
`BYTES_PER_ELEMENT`	Chrome Full support 7	Edge Full support 12	Firefox Full support 4	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support 4	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 12	Safari iOS Full support 4.2	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
`buffer`	Chrome Full support 7	Edge Full support 14	Firefox Full support 4	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support 4	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 12	Safari iOS Full support 4.2	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
`byteLength`	Chrome Full support 7	Edge Full support 14	Firefox Full support 4	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support 4	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 12	Safari iOS Full support 4.2	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
`byteOffset`	Chrome Full support 7	Edge Full support 14	Firefox Full support 4	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support 4	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 12	Safari iOS Full support 4.2	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
Constructor without arguments	Chrome Full support 7	Edge Full support 12	Firefox Full support 55	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support ≤37	Chrome Android Full support 18	Firefox Android Full support 55	Opera Android Full support 12	Safari iOS Full support 5	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
`copyWithin`	Chrome Full support 45	Edge Full support 14	Firefox Full support 34	IE No support No	Opera Full support 36	Safari Full support 9.1	WebView Android No support No	Chrome Android No support No	Firefox Android Full support 34	Opera Android No support No	Safari iOS Full support 9.3	Samsung Internet Android No support No	nodejs Full support 4.0.0
`entries`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 36	Safari Full support 9.1	WebView Android No support No	Chrome Android Full support 45	Firefox Android Full support 37	Opera Android No support No	Safari iOS Full support 9.3	Samsung Internet Android Full support 5.0	nodejs Full support 0.12
`every`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 36	Safari Full support 9.1	WebView Android No support No	Chrome Android Full support 45	Firefox Android Full support 37	Opera Android No support No	Safari iOS Full support 9.3	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`fill`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 36	Safari Full support 9.1	WebView Android No support No	Chrome Android Full support 45	Firefox Android Full support 37	Opera Android No support No	Safari iOS Full support 9.3	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`filter`	Chrome Full support 45	Edge Full support 14	Firefox Full support 38	IE No support No	Opera No support No	Safari Full support 9.1	WebView Android No support No	Chrome Android Full support 45	Firefox Android Full support 38	Opera Android No support No	Safari iOS Full support 9.3	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`find`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 32	Safari Full support 9.1	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 37	Opera Android Full support 32	Safari iOS Full support 9.3	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`findIndex`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 32	Safari Full support 9.1	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 37	Opera Android Full support 32	Safari iOS Full support 9.3	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`forEach`	Chrome Full support 45	Edge Full support 14	Firefox Full support 38	IE No support No	Opera Full support 32	Safari Full support 10	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 38	Opera Android Full support 32	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`from`	Chrome Full support 45	Edge Full support 14	Firefox Full support 38	IE No support No	Opera No support No	Safari Full support 10	WebView Android No support No	Chrome Android No support No	Firefox Android Full support 38	Opera Android No support No	Safari iOS Full support 10	Samsung Internet Android No support No	nodejs Full support 4.0.0
`includes`	Chrome Full support 47	Edge Full support 14	Firefox Full support 43	IE No support No	Opera Full support 34	Safari Full support 10	WebView Android No support No	Chrome Android Full support 47	Firefox Android Full support 43	Opera Android Full support 34	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 6.0.0 Full support 6.0.0 Full support 5.0.0 Disabled' Disabled' From version 5.0.0: this feature is behind the `--harmony` runtime flag.
Indexed properties not consulting prototype	Chrome Full support 7 Notes' Full support 7 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.	Edge Full support 12 Notes' Full support 12 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.	Firefox Full support 25	IE Full support 10 Notes' Full support 10 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.	Opera Full support 11.6 Notes' Full support 11.6 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.	Safari Full support 5.1 Notes' Full support 5.1 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.	WebView Android Full support ≤37 Notes' Full support ≤37 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.	Chrome Android Full support 18 Notes' Full support 18 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.	Firefox Android Full support 25	Opera Android Full support 12 Notes' Full support 12 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.	Safari iOS Full support 5 Notes' Full support 5 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.	Samsung Internet Android Full support 1.0 Notes' Full support 1.0 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.	nodejs Full support 0.10 Notes' Full support 0.10 Notes' Notes' Negative integers are not considered as indexed properties and therefore return the value of the prototype property.
`indexOf`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37 Notes' Full support 37 Notes' Notes' Starting with Firefox 47, this method will no longer return `-0`. For example, `new Uint8Array([0]).indexOf(0, -0)` will now always return `+0`.	IE No support No	Opera Full support 32	Safari Full support 9.1	WebView Android No support No	Chrome Android Full support 45	Firefox Android Full support 37 Notes' Full support 37 Notes' Notes' Starting with Firefox 47, this method will no longer return `-0`. For example, `new Uint8Array([0]).indexOf(0, -0)` will now always return `+0`.	Opera Android Full support 32	Safari iOS Full support 9.3	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
Iterable in constructor	Chrome Full support 39	Edge Full support 14	Firefox Full support 52	IE No support No	Opera Full support 26	Safari Full support 10	WebView Android Full support 39	Chrome Android Full support 39	Firefox Android Full support 52	Opera Android Full support 26	Safari iOS Full support 10	Samsung Internet Android Full support 4.0	nodejs Full support 4.0.0
`join`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 32	Safari Full support 9.1	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 37	Opera Android Full support 32	Safari iOS Full support 9.3	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`keys`	Chrome Full support 38	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 25	Safari Full support 10	WebView Android Full support 38	Chrome Android Full support 38	Firefox Android Full support 37	Opera Android Full support 25	Safari iOS Full support 10	Samsung Internet Android Full support 3.0	nodejs Full support 0.12
`lastIndexOf`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37 Notes' Full support 37 Notes' Notes' Starting with Firefox 47, this method will no longer return `-0`. For example, `new Uint8Array([0]).lastIndexOf(0, -0)` will now always return `+0`.	IE No support No	Opera Full support 32	Safari Full support 10	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 37 Notes' Full support 37 Notes' Notes' Starting with Firefox 47, this method will no longer return `-0`. For example, `new Uint8Array([0]).lastIndexOf(0, -0)` will now always return `+0`.	Opera Android Full support 32	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`length`	Chrome Full support 7	Edge Full support 14	Firefox Full support 4	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support 4	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 12	Safari iOS Full support 4.2	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
`map`	Chrome Full support 45	Edge Full support 14	Firefox Full support 38	IE No support No	Opera Full support 32	Safari Full support 9.1	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 38	Opera Android Full support 32	Safari iOS Full support 9.3	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`name`	Chrome Full support 7	Edge Full support 12	Firefox Full support 4	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support 4	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 12	Safari iOS Full support 4.2	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
Named properties	Chrome Full support 7	Edge Full support 12	Firefox Full support 30	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support ≤37	Chrome Android Full support 18	Firefox Android Full support 30	Opera Android Full support 12	Safari iOS Full support 5	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
`TypedArray()` without `new` throws	Chrome Full support 7	Edge Full support 14	Firefox Full support 44	IE No support No	Opera Full support 15	Safari Full support 5.1	WebView Android Full support ≤37	Chrome Android Full support 18	Firefox Android Full support 44	Opera Android Full support 14	Safari iOS Full support 5	Samsung Internet Android Full support 1.0	nodejs Full support 0.12
`of`	Chrome Full support 45	Edge Full support 14	Firefox Full support 38	IE No support No	Opera No support No	Safari Full support 9.1	WebView Android No support No	Chrome Android No support No	Firefox Android Full support 38	Opera Android No support No	Safari iOS Full support 9.3	Samsung Internet Android No support No	nodejs Full support 4.0.0
`reduce`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 32	Safari Full support 10	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 37	Opera Android No support No	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`reduceRight`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 32	Safari Full support 10	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 37	Opera Android No support No	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`reverse`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 32	Safari Full support 10	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 37	Opera Android No support No	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`set`	Chrome Full support 7	Edge Full support 14	Firefox Full support 4	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support 4	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 12	Safari iOS Full support 4.2	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
`slice`	Chrome Full support 45	Edge Full support 14	Firefox Full support 38	IE No support No	Opera Full support 32	Safari Full support 10	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 38	Opera Android Full support 32	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`some`	Chrome Full support 45	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 32	Safari Full support 10	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 37	Opera Android No support No	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`sort`	Chrome Full support 45	Edge Full support 14	Firefox Full support 46	IE No support No	Opera Full support 32	Safari Full support 10	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 46	Opera Android Full support 32	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 4.0.0
`subarray`	Chrome Full support 7	Edge Full support 14	Firefox Full support 4	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support 4	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 12	Safari iOS Full support 4.2	Samsung Internet Android Full support 1.0	nodejs Full support 0.12
`toLocaleString`	Chrome Full support 7	Edge Full support 12	Firefox Full support 51	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support ≤37	Chrome Android Full support 18	Firefox Android Full support 51	Opera Android Full support 12	Safari iOS Full support 5	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
`toString`	Chrome Full support 7	Edge Full support 12	Firefox Full support 51	IE Full support 10	Opera Full support 11.6	Safari Full support 5.1	WebView Android Full support ≤37	Chrome Android Full support 18	Firefox Android Full support 51	Opera Android Full support 12	Safari iOS Full support 5	Samsung Internet Android Full support 1.0	nodejs Full support 0.10
`values`	Chrome Full support 38	Edge Full support 14	Firefox Full support 37	IE No support No	Opera Full support 25	Safari Full support 10	WebView Android Full support 38	Chrome Android Full support 38	Firefox Android Full support 37	Opera Android Full support 25	Safari iOS Full support 10	Samsung Internet Android Full support 3.0	nodejs Full support 0.12
`@@iterator`	Chrome Full support 38	Edge Full support 12	Firefox Full support 36 Full support 36 No support 27 — 36 Notes' Alternate Name' Notes' A placeholder property named `@@iterator` is used. Alternate Name' Uses the non-standard name: `@@iterator` No support 17 — 27 Notes' Alternate Name' Notes' A placeholder property named `iterator` is used. Alternate Name' Uses the non-standard name: `iterator`	IE No support No	Opera Full support 25	Safari Full support 10	WebView Android Full support 38	Chrome Android Full support 38	Firefox Android Full support 36 Full support 36 No support 27 — 36 Notes' Alternate Name' Notes' A placeholder property named `@@iterator` is used. Alternate Name' Uses the non-standard name: `@@iterator` No support 17 — 27 Notes' Alternate Name' Notes' A placeholder property named `iterator` is used. Alternate Name' Uses the non-standard name: `iterator`	Opera Android Full support 25	Safari iOS Full support 10	Samsung Internet Android Full support 3.0	nodejs Full support 0.12
`@@species`	Chrome Full support 51	Edge Full support 13	Firefox Full support 48	IE No support No	Opera Full support 38	Safari Full support 10	WebView Android Full support 51	Chrome Android Full support 51	Firefox Android Full support 48	Opera Android Full support 41	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 6.5.0 Full support 6.5.0 Full support 6.0.0 Disabled' Disabled' From version 6.0.0: this feature is behind the `--harmony` runtime flag.

Legend

Full support: Full support
No support: No support
See implementation notes.': See implementation notes.
User must explicitly enable this feature.': User must explicitly enable this feature.
Uses a non-standard name.': Uses a non-standard name.