Int8Array - JavaScript | MDN (original) (raw)
Constructor
Creates a new Int8Array object.
Static properties
Also inherits static properties from its parent TypedArray.
Returns a number value of the element size. 1 in the case of Int8Array.
Static methods
Inherits static methods from its parent TypedArray.
Instance properties
Also inherits instance properties from its parent TypedArray.
These properties are defined on Int8Array.prototype and shared by all Int8Array instances.
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.
Instance methods
Inherits instance methods from its parent TypedArray.
Examples
Different ways to create an Int8Array
// 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]
Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-typedarray-objects |