Int32Array - JavaScript | MDN
Constructor
Int32Array()-
Creates a new
Int32Arrayobject.
Static properties
Also inherits static properties from its parent TypedArray.
Int32Array.BYTES_PER_ELEMENT-
Returns a number value of the element size.
4in the case ofInt32Array.
Static methods
Inherits static methods from its parent TypedArray.
Instance properties
Also inherits instance properties from its parent TypedArray.
These properties are defined on Int32Array.prototype and shared by all Int32Array instances.
Int32Array.prototype.BYTES_PER_ELEMENT-
Returns a number value of the element size.
4in the case of anInt32Array. Int32Array.prototype.constructor-
The constructor function that created the instance object. For
Int32Arrayinstances, the initial value is theInt32Arrayconstructor.
Instance methods
Inherits instance methods from its parent TypedArray.
Examples
Different ways to create an Int32Array
js
// 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® 2027 Language Specification # sec-typedarray-objects |