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 BluetoothRemoteGATTCharacteristic.startNotifications() method returns a Promise to the BluetoothRemoteGATTCharacteristic instance when there is an active notification on it.


BluetoothRemoteGATTCharacteristic.startNotifications().then(function(BluetoothRemoteGATTCharacteristic) { ... })


A Promise to the BluetoothRemoteGATTCharacteristic instance.


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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support56 ? No ?43 ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No56 ? No43 ? ?

Document Tags and Contributors

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