The byteOffset accessor property represents the offset (in bytes) of a typed array from the start of its ArrayBuffer.

Syntax

typedarray.byteOffset

Description

The byteOffset property is an accessor property whose set accessor function is undefined, meaning that you can only read this property. The value is established when a TypedArray is constructed and cannot be changed. TypedArray is one of the TypedArray objects.

Examples

Using the byteOffset property

var buffer = new ArrayBuffer(8);

var uint8 = new Uint8Array(buffer);
uint8.byteOffset; // 0 (no offset specified)

var uint8 = new Uint8Array(buffer, 3);
uint8.byteOffset; // 3 (as specified when constructing Uint8Array)

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'TypedArray.prototype.byteOffset' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'TypedArray.prototype.byteOffset' in that specification.
Draft  

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung InternetNode.js
Basic supportChrome Full support 7Edge Full support 14Firefox Full support 4IE Full support 10Opera Full support 11.6Safari Full support 5.1WebView Android Full support 4Chrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support 11.6Safari iOS Full support 4.2Samsung Internet Android Full support Yesnodejs Full support Yes

Legend

Full support  
Full support

See also

Document Tags and Contributors

Contributors to this page: fscholz, SphinxKnight, matinkaboli, jameshkramer
Last updated by: fscholz,