DataView.prototype.buffer
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Thebuffer accessor property ofDataView instances returns theArrayBuffer orSharedArrayBuffer referenced by this view at construction time.
Try it
// Create an ArrayBufferconst buffer = new ArrayBuffer(123);// Create a viewconst view = new DataView(buffer);console.log(view.buffer.byteLength);// Expected output: 123Description
Thebuffer property is an accessor property whose set accessor function isundefined, meaning that you can only read this property. The value is established when theDataView is constructed and cannot be changed.
Examples
Using the buffer property
js
const buffer = new ArrayBuffer(8);const dataview = new DataView(buffer);dataview.buffer; // ArrayBuffer { byteLength: 8 }Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-get-dataview.prototype.buffer |