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This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The Int32Array typed array represents an array of 32-bit signed integers in the platform byte order. If control over byte order is needed, use DataView instead. 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).
Int32Array
DataView
0
Int32Array is a subclass of the hidden TypedArray class.
TypedArray
Int32Array()
Creates a new Int32Array object.
Also inherits static properties from its parent TypedArray.
Int32Array.BYTES_PER_ELEMENT
Returns a number value of the element size. 4 in the case of Int32Array.
4
Inherits static methods from its parent TypedArray.
Also inherits instance properties from its parent TypedArray.
These properties are defined on Int32Array.prototype and shared by all Int32Array instances.
Int32Array.prototype
Int32Array.prototype.BYTES_PER_ELEMENT
Returns a number value of the element size. 4 in the case of an Int32Array.
Int32Array.prototype.constructor
The constructor function that created the instance object. For Int32Array instances, the initial value is the Int32Array constructor.
Inherits instance methods from its parent TypedArray.
// From a length const int32 = new Int32Array(2); int32[0] = 42; console.log(int32[0]); // 42 console.log(int32.length); // 2 console.log(int32.BYTES_PER_ELEMENT); // 4 // From an array const x = new Int32Array([21, 31]); console.log(x[1]); // 31 // From another TypedArray const y = new Int32Array(x); console.log(y[0]); // 21 // From an ArrayBuffer const buffer = new ArrayBuffer(32); const z = new Int32Array(buffer, 4, 4); console.log(z.byteOffset); // 4 // From an iterable const iterable = (function* () { yield* [1, 2, 3]; })(); const int32FromIterable = new Int32Array(iterable); console.log(int32FromIterable); // Int32Array [1, 2, 3]
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core-js
ArrayBuffer