Int8Array

BaselineWidely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

TheInt8Array typed array represents an array of 8-bit signed integers. The contents are initialized to0 unless initialization data is explicitly provided. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).

Int8Array is a subclass of the hiddenTypedArray class.

Constructor

Int8Array(): Creates a newInt8Array object.

Static properties

Also inherits static properties from its parentTypedArray.

Int8Array.BYTES_PER_ELEMENT: Returns a number value of the element size.1 in the case ofInt8Array.

Static methods

Inherits static methods from its parentTypedArray.

Instance properties

Also inherits instance properties from its parentTypedArray.

These properties are defined onInt8Array.prototype and shared by allInt8Array instances.

Int8Array.prototype.BYTES_PER_ELEMENT: Returns a number value of the element size.1 in the case of aInt8Array.
Int8Array.prototype.constructor: The constructor function that created the instance object. ForInt8Array instances, the initial value is theInt8Array constructor.

Instance methods

Inherits instance methods from its parentTypedArray.

Examples

Different ways to create an Int8Array

// From a lengthconst int8 = new Int8Array(2);int8[0] = 42;console.log(int8[0]); // 42console.log(int8.length); // 2console.log(int8.BYTES_PER_ELEMENT); // 1// From an arrayconst x = new Int8Array([21, 31]);console.log(x[1]); // 31// From another TypedArrayconst y = new Int8Array(x);console.log(y[0]); // 21// From an ArrayBufferconst buffer = new ArrayBuffer(8);const z = new Int8Array(buffer, 1, 4);console.log(z.byteOffset); // 1// From an iterableconst iterable = (function* () {  yield* [1, 2, 3];})();const int8FromIterable = new Int8Array(iterable);console.log(int8FromIterable);// Int8Array [1, 2, 3]