files/en-us/web/javascript/reference/global_objects/arraybuffer/isview/index.md

metadata

title: ArrayBuffer.isView()
short-title: isView()
slug: Web/JavaScript/Reference/Global_Objects/ArrayBuffer/isView
page-type: javascript-static-method
browser-compat: javascript.builtins.ArrayBuffer.isView
sidebar: jsref

The ArrayBuffer.isView() static method determines whether the passed value is one of the ArrayBuffer views, such as typed array objects or a {{jsxref("DataView")}}.

{{InteractiveExample("JavaScript Demo: ArrayBuffer.isView()", "shorter")}}

// Create an ArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(16);

console.log(ArrayBuffer.isView(new Int32Array()));
// Expected output: true

Syntax

ArrayBuffer.isView(value)

Parameters

• value
  • : The value to be checked.

Return value

true if the given argument is one of the {{jsxref("ArrayBuffer")}} views; otherwise, false.

Examples

Using isView

ArrayBuffer.isView(); // false
ArrayBuffer.isView([]); // false
ArrayBuffer.isView({}); // false
ArrayBuffer.isView(null); // false
ArrayBuffer.isView(undefined); // false
ArrayBuffer.isView(new ArrayBuffer(10)); // false

ArrayBuffer.isView(new Uint8Array()); // true
ArrayBuffer.isView(new Float32Array()); // true
ArrayBuffer.isView(new Int8Array(10).subarray(0, 3)); // true

const buffer = new ArrayBuffer(2);
const dv = new DataView(buffer);
ArrayBuffer.isView(dv); // true

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• JavaScript typed arrays guide