MDN’s new design is in Beta! A sneak peek:


This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The BluetoothRemoteGATTDescriptor.writeValue() method sets the value property to the bytes contained in an ArrayBuffer and returns a Promise.


BluetoothRemoteGATTDescriptor.writeValue(array[]).then(function() { ... })


Sets the value with the bytes contained in the array.




Specification Status Comment
Web Bluetooth
The definition of 'writeValue()' in that specification.
Draft Initial definition.

Browser Compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 57 ? ? 44 ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support No support 57 ? ? ? 44 ?

Document Tags and Contributors

 Contributors to this page: Ladvien, jpmedley, rolfedh
 Last updated by: Ladvien,