The byteLength accessor property represents the length of an SharedArrayBuffer in bytes.
Syntax
sab.byteLength
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
var sab = new SharedArrayBuffer(1024); sab.byteLength; // 1024
Specifications
| Specification | Status | Comment |
|---|---|---|
| ECMAScript Latest Draft (ECMA-262) The definition of 'SharedArrayBuffer.prototype.byteLength' in that specification. |
Draft | Initial definition in ES2017. |
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | No support | No support | 55 (55) [1] | No support | No support | No support |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | No support | No support | 55.0 (55) [1] | No support | No support | No support |
[1] Enabled by default in Firefox 55. In Firefox version 46 until version 54, this feature is disabled by a preference setting (in about:config, set javascript.options.shared_memory to true).
See also
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fscholz,
chrisdavidmills
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