Int32Array

BaselineWidely available

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

TheInt32Array typed array represents an array of 32-bit signed integers in the platform byte order. If control over byte order is needed, useDataView instead. 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).

Int32Array is a subclass of the hiddenTypedArray class.

Constructor

Int32Array(): Creates a newInt32Array object.

Static properties

Also inherits static properties from its parentTypedArray.

Int32Array.BYTES_PER_ELEMENT: Returns a number value of the element size.4 in the case ofInt32Array.

Static methods

Inherits static methods from its parentTypedArray.

Instance properties

Also inherits instance properties from its parentTypedArray.

These properties are defined onInt32Array.prototype and shared by allInt32Array instances.

Int32Array.prototype.BYTES_PER_ELEMENT: Returns a number value of the element size.4 in the case of aInt32Array.
Int32Array.prototype.constructor: The constructor function that created the instance object. ForInt32Array instances, the initial value is theInt32Array constructor.

// From a lengthconst int32 = new Int32Array(2);int32[0] = 42;console.log(int32[0]); // 42console.log(int32.length); // 2console.log(int32.BYTES_PER_ELEMENT); // 4// From an arrayconst x = new Int32Array([21, 31]);console.log(x[1]); // 31// From another TypedArrayconst y = new Int32Array(x);console.log(y[0]); // 21// From an ArrayBufferconst buffer = new ArrayBuffer(32);const z = new Int32Array(buffer, 4, 4);console.log(z.byteOffset); // 4// From an iterableconst iterable = (function* () {  yield* [1, 2, 3];})();const int32FromIterable = new Int32Array(iterable);console.log(int32FromIterable);// Int32Array [1, 2, 3]