Int32Array

The Int32Array typed array represents an array of twos-complement 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. 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).

Constructor

Int32Array(): Creates a new Int32Array object.

Static properties

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.
Int32Array.name: Returns the string value of the constructor name. "Int32Array" in the case of Int32Array.

Static methods

Inherits static methods from its parent TypedArray.

Instance properties

Also inherits instance properties from its parent TypedArray.

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

Instance methods

Inherits instance methods from its parent TypedArray.

Examples

Different ways to create an Int32Array

// 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]

Specifications

Specification
ECMAScript Language Specification # table-49

Browser compatibility

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