Uint16Array
The Uint16Array
typed array represents an array of 16-bit unsigned 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).
Uint16Array
is a subclass of the hidden TypedArray
class.
Constructor
Uint16Array()
-
Creates a new
Uint16Array
object.
Static properties
Also inherits static properties from its parent TypedArray
.
Uint16Array.BYTES_PER_ELEMENT
-
Returns a number value of the element size.
2
in the case ofUint16Array
.
Static methods
Inherits static methods from its parent TypedArray
.
Instance properties
Also inherits instance properties from its parent TypedArray
.
These properties are defined on Uint16Array.prototype
and shared by all Uint16Array
instances.
Uint16Array.prototype.BYTES_PER_ELEMENT
-
Returns a number value of the element size.
2
in the case of aUint16Array
. Uint16Array.prototype.constructor
-
The constructor function that created the instance object. For
Uint16Array
instances, the initial value is theUint16Array
constructor.
Instance methods
Inherits instance methods from its parent TypedArray
.
Examples
Different ways to create a Uint16Array
js
// From a length
const uint16 = new Uint16Array(2);
uint16[0] = 42;
console.log(uint16[0]); // 42
console.log(uint16.length); // 2
console.log(uint16.BYTES_PER_ELEMENT); // 2
// From an array
const x = new Uint16Array([21, 31]);
console.log(x[1]); // 31
// From another TypedArray
const y = new Uint16Array(x);
console.log(y[0]); // 21
// From an ArrayBuffer
const buffer = new ArrayBuffer(16);
const z = new Uint16Array(buffer, 2, 4);
console.log(z.byteOffset); // 2
// From an iterable
const iterable = (function* () {
yield* [1, 2, 3];
})();
const uint16FromIterable = new Uint16Array(iterable);
console.log(uint16FromIterable);
// Uint16Array [1, 2, 3]
Specifications
Specification |
---|
ECMAScript Language Specification # table-49 |
Browser compatibility
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