byteLength accessor property represents the length of an
SharedArrayBuffer in bytes.
The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
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.
var sab = new SharedArrayBuffer(1024); sab.byteLength; // 1024
The definition of 'SharedArrayBuffer.prototype.byteLength' in that specification.