BluetoothCharacteristicProperties.writableAuxiliaries - Web APIs
the writableauxiliaries read-only property of the bluetoothcharacteristicproperties interface returns a boolean that is true if reliable writes to the characteristic descriptor is permitted.
... syntax var aboolean = bluetoothcharacteristicproperties.writableauxiliaries; value a boolean.
... specifications specification status comment web bluetooththe definition of 'writableauxiliaries' in that specification.

BluetoothCharacteristicProperties - Web APIs
writableauxiliariesread only returns a boolean that is true if reliable writes to the characteristic descriptor is permitted.
... nochrome android full support 56firefox android no support noopera android full support yessafari ios no support nosamsung internet android full support 6.0writableauxiliaries experimentalchrome full support 56notes full support 56notes notes chromeos and macos only.