This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The BluetoothRemoteGATTCharacteristic.readValue() method returns a Promise that resolves to a DataView holding a duplicate of the value property if it is available and supported. Otherwise it throws an error.


BluetoothRemoteGATTCharacteristic.readValue().then(function(dataView) { ... })


A Promise that resolves to an DataView.


Specification Status Comment
Web Bluetooth
The definition of 'readValue()' 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: ExE-Boss, fscholz, jpmedley, rolfedh
Last updated by: ExE-Boss,