HTML: Markup language
CSS: Styling language
JavaScript: Scripting language
Web APIs: Programming interfaces
All web technology
Learn web development
Discover our tools
Get to know MDN better
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The Int8Array typed array represents an array of 8-bit signed integers. The contents are initialized to 0 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
0
Int8Array is a subclass of the hidden TypedArray class.
TypedArray
Int8Array()
Creates a new Int8Array object.
Also inherits static properties from its parent TypedArray.
Int8Array.BYTES_PER_ELEMENT
Returns a number value of the element size. 1 in the case of Int8Array.
1
Inherits static methods from its parent TypedArray.
Also inherits instance properties from its parent TypedArray.
These properties are defined on Int8Array.prototype and shared by all Int8Array instances.
Int8Array.prototype
Int8Array.prototype.BYTES_PER_ELEMENT
Returns a number value of the element size. 1 in the case of an Int8Array.
Int8Array.prototype.constructor
The constructor function that created the instance object. For Int8Array instances, the initial value is the Int8Array constructor.
Inherits instance methods from its parent TypedArray.
// From a length const int8 = new Int8Array(2); int8[0] = 42; console.log(int8[0]); // 42 console.log(int8.length); // 2 console.log(int8.BYTES_PER_ELEMENT); // 1 // From an array const x = new Int8Array([21, 31]); console.log(x[1]); // 31 // From another TypedArray const y = new Int8Array(x); console.log(y[0]); // 21 // From an ArrayBuffer const buffer = new ArrayBuffer(8); const z = new Int8Array(buffer, 1, 4); console.log(z.byteOffset); // 1 // From an iterable const iterable = (function* () { yield* [1, 2, 3]; })(); const int8FromIterable = new Int8Array(iterable); console.log(int8FromIterable); // Int8Array [1, 2, 3]
Enable JavaScript to view this browser compatibility table.
core-js
ArrayBuffer
DataView