SharedArrayBuffer.prototype.byteLength

The byteLength accessor property represents the length of an SharedArrayBuffer in bytes.

Description

The byteLength property is an accessor property whose set accessor function is undefined, meaning that you can only read this property. The value is established when the shared array is constructed and cannot be changed.

Examples

Using byteLength

var sab = new SharedArrayBuffer(1024);
sab.byteLength; // 1024

Specifications

Specification
ECMAScript Language Specification # sec-get-sharedarraybuffer.prototype.bytelength

Browser compatibility

Report problems with this compatibility data on GitHub

	desktop						mobile						server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	Deno	Node.js
`byteLength`	ChromeFull support68	EdgeFull support79	FirefoxFull support79	Internet ExplorerNo supportNo	OperaNo supportNo	SafariFull support15.2 footnote	WebView AndroidNo support60 – 63 footnote	Chrome AndroidFull support89 footnote	Firefox for AndroidFull support79	Opera AndroidNo supportNo	Safari on iOSFull support15.2 footnote	Samsung InternetFull support15.0 footnote	DenoFull support1.0	Node.jsFull support8.10.0

Full support: Full support
No support: No support
: See implementation notes.
: User must explicitly enable this feature.