Int16Array() constructor

The Int16Array() typed array constructor creates an array of twos-complement 16-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).

Syntax

new Int16Array()
new Int16Array(length)
new Int16Array(typedArray)
new Int16Array(object)

new Int16Array(buffer)
new Int16Array(buffer, byteOffset)
new Int16Array(buffer, byteOffset, length)

Note: Int16Array() can only be constructed with new. Attempting to call it without new throws a TypeError.

Parameters

See TypedArray.

Exceptions

See TypedArray.

Examples

Different ways to create an Int16Array

// From a length
const int16 = new Int16Array(2);
int16[0] = 42;
console.log(int16[0]); // 42
console.log(int16.length); // 2
console.log(int16.BYTES_PER_ELEMENT); // 2

// From an array
const x = new Int16Array([21, 31]);
console.log(x[1]); // 31

// From another TypedArray
const y = new Int16Array(x);
console.log(y[0]); // 21

// From an ArrayBuffer
const buffer = new ArrayBuffer(16);
const z = new Int16Array(buffer, 2, 4);
console.log(z.byteOffset); // 2

// From an iterable
const iterable = (function* () {
  yield* [1, 2, 3];
})();
const int16FromIterable = new Int16Array(iterable);
console.log(int16FromIterable);
// Int16Array [1, 2, 3]

Specifications

Specification
ECMAScript Language Specification
# sec-typedarray-constructors

Browser compatibility

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See also